Home / 21,251.28-31,876.86-10,124.22

Finding the Fourth Proportional to 21,251.28, 31,876.86 and 10,124.22

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Solution

The fourth proportional to 21,251.28, 31,876.86 and 10,124.22 is: 15,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.28 : 31,876.86 = 10,124.22 : x
  2. Step 2: Convert to fraction form
    21,251.28/31,876.86 = 10,124.22/x
  3. Step 3: Cross multiply
    21,251.28x = 31,876.86 × 10,124.22
  4. Step 4: Simplify right side
    21,251.28x = 322,728,343.55
  5. Step 5: Solve for x
    x = 322,728,343.55/21,251.28
  6. Step 6: Final answer
    x = 15,186.30

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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.