Home / 21,653,355.78-29,880,718.56-12,946,383.90

Finding the Fourth Proportional to 21,653,355.78, 29,880,718.56 and 12,946,383.90

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Solution

The fourth proportional to 21,653,355.78, 29,880,718.56 and 12,946,383.90 is: 17,865,464.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653,355.78 : 29,880,718.56 = 12,946,383.90 : x
  2. Step 2: Convert to fraction form
    21,653,355.78/29,880,718.56 = 12,946,383.90/x
  3. Step 3: Cross multiply
    21,653,355.78x = 29,880,718.56 × 12,946,383.90
  4. Step 4: Simplify right side
    21,653,355.78x = 386,847,253,685,615.19
  5. Step 5: Solve for x
    x = 386,847,253,685,615.19/21,653,355.78
  6. Step 6: Final answer
    x = 17,865,464.25

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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.