Home / 20,751.30-31,117.59-5,956.86

Finding the Fourth Proportional to 20,751.30, 31,117.59 and 5,956.86

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Solution

The fourth proportional to 20,751.30, 31,117.59 and 5,956.86 is: 8,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.30 : 31,117.59 = 5,956.86 : x
  2. Step 2: Convert to fraction form
    20,751.30/31,117.59 = 5,956.86/x
  3. Step 3: Cross multiply
    20,751.30x = 31,117.59 × 5,956.86
  4. Step 4: Simplify right side
    20,751.30x = 185,363,127.17
  5. Step 5: Solve for x
    x = 185,363,127.17/20,751.30
  6. Step 6: Final answer
    x = 8,932.60

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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.