Home / 20,966.43-31,449.65-5,171.43

Finding the Fourth Proportional to 20,966.43, 31,449.65 and 5,171.43

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Solution

The fourth proportional to 20,966.43, 31,449.65 and 5,171.43 is: 7,757.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.43 : 31,449.65 = 5,171.43 : x
  2. Step 2: Convert to fraction form
    20,966.43/31,449.65 = 5,171.43/x
  3. Step 3: Cross multiply
    20,966.43x = 31,449.65 × 5,171.43
  4. Step 4: Simplify right side
    20,966.43x = 162,639,663.50
  5. Step 5: Solve for x
    x = 162,639,663.50/20,966.43
  6. Step 6: Final answer
    x = 7,757.15

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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.