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Finding the Fourth Proportional to 28,242.93, 42,338.47 and 9,761.97

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Solution

The fourth proportional to 28,242.93, 42,338.47 and 9,761.97 is: 14,633.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.93 : 42,338.47 = 9,761.97 : x
  2. Step 2: Convert to fraction form
    28,242.93/42,338.47 = 9,761.97/x
  3. Step 3: Cross multiply
    28,242.93x = 42,338.47 × 9,761.97
  4. Step 4: Simplify right side
    28,242.93x = 413,306,873.99
  5. Step 5: Solve for x
    x = 413,306,873.99/28,242.93
  6. Step 6: Final answer
    x = 14,633.99

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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.