Home / 21,240.50-31,864.60-8,753.58

Finding the Fourth Proportional to 21,240.50, 31,864.60 and 8,753.58

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Solution

The fourth proportional to 21,240.50, 31,864.60 and 8,753.58 is: 13,131.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.50 : 31,864.60 = 8,753.58 : x
  2. Step 2: Convert to fraction form
    21,240.50/31,864.60 = 8,753.58/x
  3. Step 3: Cross multiply
    21,240.50x = 31,864.60 × 8,753.58
  4. Step 4: Simplify right side
    21,240.50x = 278,929,325.27
  5. Step 5: Solve for x
    x = 278,929,325.27/21,240.50
  6. Step 6: Final answer
    x = 13,131.96

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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.