Home / 20,789.46-31,188.28-6,746.87

Finding the Fourth Proportional to 20,789.46, 31,188.28 and 6,746.87

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Solution

The fourth proportional to 20,789.46, 31,188.28 and 6,746.87 is: 10,121.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,789.46 : 31,188.28 = 6,746.87 : x
  2. Step 2: Convert to fraction form
    20,789.46/31,188.28 = 6,746.87/x
  3. Step 3: Cross multiply
    20,789.46x = 31,188.28 × 6,746.87
  4. Step 4: Simplify right side
    20,789.46x = 210,423,114.74
  5. Step 5: Solve for x
    x = 210,423,114.74/20,789.46
  6. Step 6: Final answer
    x = 10,121.63

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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.