Home / 15,398.53-21,253.27-9,729.68

Finding the Fourth Proportional to 15,398.53, 21,253.27 and 9,729.68

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Solution

The fourth proportional to 15,398.53, 21,253.27 and 9,729.68 is: 13,429.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.53 : 21,253.27 = 9,729.68 : x
  2. Step 2: Convert to fraction form
    15,398.53/21,253.27 = 9,729.68/x
  3. Step 3: Cross multiply
    15,398.53x = 21,253.27 × 9,729.68
  4. Step 4: Simplify right side
    15,398.53x = 206,787,361.14
  5. Step 5: Solve for x
    x = 206,787,361.14/15,398.53
  6. Step 6: Final answer
    x = 13,429.04

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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.