Home / 15,538.55-21,434.77-9,249.71

Finding the Fourth Proportional to 15,538.55, 21,434.77 and 9,249.71

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Solution

The fourth proportional to 15,538.55, 21,434.77 and 9,249.71 is: 12,759.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.55 : 21,434.77 = 9,249.71 : x
  2. Step 2: Convert to fraction form
    15,538.55/21,434.77 = 9,249.71/x
  3. Step 3: Cross multiply
    15,538.55x = 21,434.77 × 9,249.71
  4. Step 4: Simplify right side
    15,538.55x = 198,265,406.42
  5. Step 5: Solve for x
    x = 198,265,406.42/15,538.55
  6. Step 6: Final answer
    x = 12,759.58

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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.