Home / 21,279.96-31,925.11-6,489.14

Finding the Fourth Proportional to 21,279.96, 31,925.11 and 6,489.14

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Solution

The fourth proportional to 21,279.96, 31,925.11 and 6,489.14 is: 9,735.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.96 : 31,925.11 = 6,489.14 : x
  2. Step 2: Convert to fraction form
    21,279.96/31,925.11 = 6,489.14/x
  3. Step 3: Cross multiply
    21,279.96x = 31,925.11 × 6,489.14
  4. Step 4: Simplify right side
    21,279.96x = 207,166,508.31
  5. Step 5: Solve for x
    x = 207,166,508.31/21,279.96
  6. Step 6: Final answer
    x = 9,735.29

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1.5x scale

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.