Home / 20,737.82-31,095.19-12,307.75

Finding the Fourth Proportional to 20,737.82, 31,095.19 and 12,307.75

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Solution

The fourth proportional to 20,737.82, 31,095.19 and 12,307.75 is: 18,454.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.82 : 31,095.19 = 12,307.75 : x
  2. Step 2: Convert to fraction form
    20,737.82/31,095.19 = 12,307.75/x
  3. Step 3: Cross multiply
    20,737.82x = 31,095.19 × 12,307.75
  4. Step 4: Simplify right side
    20,737.82x = 382,711,824.72
  5. Step 5: Solve for x
    x = 382,711,824.72/20,737.82
  6. Step 6: Final answer
    x = 18,454.78

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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.