Home / 21,103.74-31,660.14-6,313.86

Finding the Fourth Proportional to 21,103.74, 31,660.14 and 6,313.86

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Solution

The fourth proportional to 21,103.74, 31,660.14 and 6,313.86 is: 9,472.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.74 : 31,660.14 = 6,313.86 : x
  2. Step 2: Convert to fraction form
    21,103.74/31,660.14 = 6,313.86/x
  3. Step 3: Cross multiply
    21,103.74x = 31,660.14 × 6,313.86
  4. Step 4: Simplify right side
    21,103.74x = 199,897,691.54
  5. Step 5: Solve for x
    x = 199,897,691.54/21,103.74
  6. Step 6: Final answer
    x = 9,472.15

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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.