Home / 21,250.23-31,874.56-8,760.87

Finding the Fourth Proportional to 21,250.23, 31,874.56 and 8,760.87

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Solution

The fourth proportional to 21,250.23, 31,874.56 and 8,760.87 is: 13,140.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.23 : 31,874.56 = 8,760.87 : x
  2. Step 2: Convert to fraction form
    21,250.23/31,874.56 = 8,760.87/x
  3. Step 3: Cross multiply
    21,250.23x = 31,874.56 × 8,760.87
  4. Step 4: Simplify right side
    21,250.23x = 279,248,876.47
  5. Step 5: Solve for x
    x = 279,248,876.47/21,250.23
  6. Step 6: Final answer
    x = 13,140.98

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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.