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Finding the Fourth Proportional to 28,471.72, 42,707.82 and 26,329

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Solution

The fourth proportional to 28,471.72, 42,707.82 and 26,329 is: 39,493.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471.72 : 42,707.82 = 26,329 : x
  2. Step 2: Convert to fraction form
    28,471.72/42,707.82 = 26,329/x
  3. Step 3: Cross multiply
    28,471.72x = 42,707.82 × 26,329
  4. Step 4: Simplify right side
    28,471.72x = 1,124,454,192.78
  5. Step 5: Solve for x
    x = 1,124,454,192.78/28,471.72
  6. Step 6: Final answer
    x = 39,493.72

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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.