Home / 20,824.50-31,234.46-5,242.13

Finding the Fourth Proportional to 20,824.50, 31,234.46 and 5,242.13

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Solution

The fourth proportional to 20,824.50, 31,234.46 and 5,242.13 is: 7,862.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.50 : 31,234.46 = 5,242.13 : x
  2. Step 2: Convert to fraction form
    20,824.50/31,234.46 = 5,242.13/x
  3. Step 3: Cross multiply
    20,824.50x = 31,234.46 × 5,242.13
  4. Step 4: Simplify right side
    20,824.50x = 163,734,917.42
  5. Step 5: Solve for x
    x = 163,734,917.42/20,824.50
  6. Step 6: Final answer
    x = 7,862.61

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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.