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Finding the Fourth Proportional to 28,029, 42,043.74 and 7,251.24

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Solution

The fourth proportional to 28,029, 42,043.74 and 7,251.24 is: 10,876.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,029 : 42,043.74 = 7,251.24 : x
  2. Step 2: Convert to fraction form
    28,029/42,043.74 = 7,251.24/x
  3. Step 3: Cross multiply
    28,029x = 42,043.74 × 7,251.24
  4. Step 4: Simplify right side
    28,029x = 304,869,249.24
  5. Step 5: Solve for x
    x = 304,869,249.24/28,029
  6. Step 6: Final answer
    x = 10,876.92

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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.