Home / 15,708.95-21,677.79-8,635.32

Finding the Fourth Proportional to 15,708.95, 21,677.79 and 8,635.32

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Solution

The fourth proportional to 15,708.95, 21,677.79 and 8,635.32 is: 11,916.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,708.95 : 21,677.79 = 8,635.32 : x
  2. Step 2: Convert to fraction form
    15,708.95/21,677.79 = 8,635.32/x
  3. Step 3: Cross multiply
    15,708.95x = 21,677.79 × 8,635.32
  4. Step 4: Simplify right side
    15,708.95x = 187,194,545.15
  5. Step 5: Solve for x
    x = 187,194,545.15/15,708.95
  6. Step 6: Final answer
    x = 11,916.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.