Home / 42,021.76-57,990.03-23,158.89

Finding the Fourth Proportional to 42,021.76, 57,990.03 and 23,158.89

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Solution

The fourth proportional to 42,021.76, 57,990.03 and 23,158.89 is: 31,959.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,021.76 : 57,990.03 = 23,158.89 : x
  2. Step 2: Convert to fraction form
    42,021.76/57,990.03 = 23,158.89/x
  3. Step 3: Cross multiply
    42,021.76x = 57,990.03 × 23,158.89
  4. Step 4: Simplify right side
    42,021.76x = 1,342,984,725.87
  5. Step 5: Solve for x
    x = 1,342,984,725.87/42,021.76
  6. Step 6: Final answer
    x = 31,959.27

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.