Home / 20,966.50-31,449.75-5,384.13

Finding the Fourth Proportional to 20,966.50, 31,449.75 and 5,384.13

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Solution

The fourth proportional to 20,966.50, 31,449.75 and 5,384.13 is: 8,076.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.50 : 31,449.75 = 5,384.13 : x
  2. Step 2: Convert to fraction form
    20,966.50/31,449.75 = 5,384.13/x
  3. Step 3: Cross multiply
    20,966.50x = 31,449.75 × 5,384.13
  4. Step 4: Simplify right side
    20,966.50x = 169,329,542.47
  5. Step 5: Solve for x
    x = 169,329,542.47/20,966.50
  6. Step 6: Final answer
    x = 8,076.20

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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.