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Finding the Fourth Proportional to 28,447.69, 42,672.44 and 9,726.97

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Solution

The fourth proportional to 28,447.69, 42,672.44 and 9,726.97 is: 14,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.69 : 42,672.44 = 9,726.97 : x
  2. Step 2: Convert to fraction form
    28,447.69/42,672.44 = 9,726.97/x
  3. Step 3: Cross multiply
    28,447.69x = 42,672.44 × 9,726.97
  4. Step 4: Simplify right side
    28,447.69x = 415,073,330.34
  5. Step 5: Solve for x
    x = 415,073,330.34/28,447.69
  6. Step 6: Final answer
    x = 14,590.76

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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.