Home / 31,122.18-42,948.09-16,974.18

Finding the Fourth Proportional to 31,122.18, 42,948.09 and 16,974.18

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Solution

The fourth proportional to 31,122.18, 42,948.09 and 16,974.18 is: 23,424.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,122.18 : 42,948.09 = 16,974.18 : x
  2. Step 2: Convert to fraction form
    31,122.18/42,948.09 = 16,974.18/x
  3. Step 3: Cross multiply
    31,122.18x = 42,948.09 × 16,974.18
  4. Step 4: Simplify right side
    31,122.18x = 729,008,610.32
  5. Step 5: Solve for x
    x = 729,008,610.32/31,122.18
  6. Step 6: Final answer
    x = 23,424.09

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Half scale
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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.