Home / 20,708.17-31,077.75-8,059.92

Finding the Fourth Proportional to 20,708.17, 31,077.75 and 8,059.92

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Solution

The fourth proportional to 20,708.17, 31,077.75 and 8,059.92 is: 12,095.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.17 : 31,077.75 = 8,059.92 : x
  2. Step 2: Convert to fraction form
    20,708.17/31,077.75 = 8,059.92/x
  3. Step 3: Cross multiply
    20,708.17x = 31,077.75 × 8,059.92
  4. Step 4: Simplify right side
    20,708.17x = 250,484,178.78
  5. Step 5: Solve for x
    x = 250,484,178.78/20,708.17
  6. Step 6: Final answer
    x = 12,095.91

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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.