Home / 21,127.72-31,691.84-5,546.92

Finding the Fourth Proportional to 21,127.72, 31,691.84 and 5,546.92

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Solution

The fourth proportional to 21,127.72, 31,691.84 and 5,546.92 is: 8,320.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.72 : 31,691.84 = 5,546.92 : x
  2. Step 2: Convert to fraction form
    21,127.72/31,691.84 = 5,546.92/x
  3. Step 3: Cross multiply
    21,127.72x = 31,691.84 × 5,546.92
  4. Step 4: Simplify right side
    21,127.72x = 175,792,101.13
  5. Step 5: Solve for x
    x = 175,792,101.13/21,127.72
  6. Step 6: Final answer
    x = 8,320.45

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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.