Home / 15,460.07-21,334.79-8,386.47

Finding the Fourth Proportional to 15,460.07, 21,334.79 and 8,386.47

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Solution

The fourth proportional to 15,460.07, 21,334.79 and 8,386.47 is: 11,573.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,460.07 : 21,334.79 = 8,386.47 : x
  2. Step 2: Convert to fraction form
    15,460.07/21,334.79 = 8,386.47/x
  3. Step 3: Cross multiply
    15,460.07x = 21,334.79 × 8,386.47
  4. Step 4: Simplify right side
    15,460.07x = 178,923,597.26
  5. Step 5: Solve for x
    x = 178,923,597.26/15,460.07
  6. Step 6: Final answer
    x = 11,573.28

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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.