Home / 28,182.11-42,273.17-7,122.22

Finding the Fourth Proportional to 28,182.11, 42,273.17 and 7,122.22

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Solution

The fourth proportional to 28,182.11, 42,273.17 and 7,122.22 is: 10,683.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.11 : 42,273.17 = 7,122.22 : x
  2. Step 2: Convert to fraction form
    28,182.11/42,273.17 = 7,122.22/x
  3. Step 3: Cross multiply
    28,182.11x = 42,273.17 × 7,122.22
  4. Step 4: Simplify right side
    28,182.11x = 301,078,728.96
  5. Step 5: Solve for x
    x = 301,078,728.96/28,182.11
  6. Step 6: Final answer
    x = 10,683.33

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Similar ratio
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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.