Home / 21,345,845,623.47-29,440,090,806.93-18,765,351,880.74

Finding the Fourth Proportional to 21,345,845,623.47, 29,440,090,806.93 and 18,765,351,880.74

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Solution

The fourth proportional to 21,345,845,623.47, 29,440,090,806.93 and 18,765,351,880.74 is: 25,881,085,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345,845,623.47 : 29,440,090,806.93 = 18,765,351,880.74 : x
  2. Step 2: Convert to fraction form
    21,345,845,623.47/29,440,090,806.93 = 18,765,351,880.74/x
  3. Step 3: Cross multiply
    21,345,845,623.47x = 29,440,090,806.93 × 18,765,351,880.74
  4. Step 4: Simplify right side
    21,345,845,623.47x = 552,453,663,392,980,336,640
  5. Step 5: Solve for x
    x = 552,453,663,392,980,336,640/21,345,845,623.47
  6. Step 6: Final answer
    x = 25,881,085,862.70

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.