Home / 28,487.28-42,729.68-8,767.82

Finding the Fourth Proportional to 28,487.28, 42,729.68 and 8,767.82

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Solution

The fourth proportional to 28,487.28, 42,729.68 and 8,767.82 is: 13,151.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.28 : 42,729.68 = 8,767.82 : x
  2. Step 2: Convert to fraction form
    28,487.28/42,729.68 = 8,767.82/x
  3. Step 3: Cross multiply
    28,487.28x = 42,729.68 × 8,767.82
  4. Step 4: Simplify right side
    28,487.28x = 374,646,142.90
  5. Step 5: Solve for x
    x = 374,646,142.90/28,487.28
  6. Step 6: Final answer
    x = 13,151.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.