Home / 28,329.28-39,091.92-15,754.72

Finding the Fourth Proportional to 28,329.28, 39,091.92 and 15,754.72

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Solution

The fourth proportional to 28,329.28, 39,091.92 and 15,754.72 is: 21,740.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,329.28 : 39,091.92 = 15,754.72 : x
  2. Step 2: Convert to fraction form
    28,329.28/39,091.92 = 15,754.72/x
  3. Step 3: Cross multiply
    28,329.28x = 39,091.92 × 15,754.72
  4. Step 4: Simplify right side
    28,329.28x = 615,882,253.86
  5. Step 5: Solve for x
    x = 615,882,253.86/28,329.28
  6. Step 6: Final answer
    x = 21,740.13

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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.