Home / 20,681.28-31,022.16-5,098.86

Finding the Fourth Proportional to 20,681.28, 31,022.16 and 5,098.86

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Solution

The fourth proportional to 20,681.28, 31,022.16 and 5,098.86 is: 7,648.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.28 : 31,022.16 = 5,098.86 : x
  2. Step 2: Convert to fraction form
    20,681.28/31,022.16 = 5,098.86/x
  3. Step 3: Cross multiply
    20,681.28x = 31,022.16 × 5,098.86
  4. Step 4: Simplify right side
    20,681.28x = 158,177,650.74
  5. Step 5: Solve for x
    x = 158,177,650.74/20,681.28
  6. Step 6: Final answer
    x = 7,648.35

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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.