Home / 21,248.28-31,872.36-10,121.22

Finding the Fourth Proportional to 21,248.28, 31,872.36 and 10,121.22

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Solution

The fourth proportional to 21,248.28, 31,872.36 and 10,121.22 is: 15,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.28 : 31,872.36 = 10,121.22 : x
  2. Step 2: Convert to fraction form
    21,248.28/31,872.36 = 10,121.22/x
  3. Step 3: Cross multiply
    21,248.28x = 31,872.36 × 10,121.22
  4. Step 4: Simplify right side
    21,248.28x = 322,587,167.48
  5. Step 5: Solve for x
    x = 322,587,167.48/21,248.28
  6. Step 6: Final answer
    x = 15,181.80

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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.