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Finding the Fourth Proportional to 28,397.53, 42,600.87 and 8,671.45

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Solution

The fourth proportional to 28,397.53, 42,600.87 and 8,671.45 is: 13,008.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.53 : 42,600.87 = 8,671.45 : x
  2. Step 2: Convert to fraction form
    28,397.53/42,600.87 = 8,671.45/x
  3. Step 3: Cross multiply
    28,397.53x = 42,600.87 × 8,671.45
  4. Step 4: Simplify right side
    28,397.53x = 369,411,314.16
  5. Step 5: Solve for x
    x = 369,411,314.16/28,397.53
  6. Step 6: Final answer
    x = 13,008.57

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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.