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Finding the Fourth Proportional to 28,612.14, 42,914.56 and 7,553.91

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Solution

The fourth proportional to 28,612.14, 42,914.56 and 7,553.91 is: 11,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,612.14 : 42,914.56 = 7,553.91 : x
  2. Step 2: Convert to fraction form
    28,612.14/42,914.56 = 7,553.91/x
  3. Step 3: Cross multiply
    28,612.14x = 42,914.56 × 7,553.91
  4. Step 4: Simplify right side
    28,612.14x = 324,172,638.74
  5. Step 5: Solve for x
    x = 324,172,638.74/28,612.14
  6. Step 6: Final answer
    x = 11,329.90

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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.