Home / 20,728.27-31,092.54-7,575.49

Finding the Fourth Proportional to 20,728.27, 31,092.54 and 7,575.49

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Solution

The fourth proportional to 20,728.27, 31,092.54 and 7,575.49 is: 11,363.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.27 : 31,092.54 = 7,575.49 : x
  2. Step 2: Convert to fraction form
    20,728.27/31,092.54 = 7,575.49/x
  3. Step 3: Cross multiply
    20,728.27x = 31,092.54 × 7,575.49
  4. Step 4: Simplify right side
    20,728.27x = 235,541,225.84
  5. Step 5: Solve for x
    x = 235,541,225.84/20,728.27
  6. Step 6: Final answer
    x = 11,363.28

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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.