Home / 28,242.68-42,338.10-9,761.72

Finding the Fourth Proportional to 28,242.68, 42,338.10 and 9,761.72

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Solution

The fourth proportional to 28,242.68, 42,338.10 and 9,761.72 is: 14,633.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.68 : 42,338.10 = 9,761.72 : x
  2. Step 2: Convert to fraction form
    28,242.68/42,338.10 = 9,761.72/x
  3. Step 3: Cross multiply
    28,242.68x = 42,338.10 × 9,761.72
  4. Step 4: Simplify right side
    28,242.68x = 413,292,465.84
  5. Step 5: Solve for x
    x = 413,292,465.84/28,242.68
  6. Step 6: Final answer
    x = 14,633.62

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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.