Home / 21,938.18-32,839.02-11,917.87

Finding the Fourth Proportional to 21,938.18, 32,839.02 and 11,917.87

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Solution

The fourth proportional to 21,938.18, 32,839.02 and 11,917.87 is: 17,839.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.18 : 32,839.02 = 11,917.87 : x
  2. Step 2: Convert to fraction form
    21,938.18/32,839.02 = 11,917.87/x
  3. Step 3: Cross multiply
    21,938.18x = 32,839.02 × 11,917.87
  4. Step 4: Simplify right side
    21,938.18x = 391,371,171.29
  5. Step 5: Solve for x
    x = 391,371,171.29/21,938.18
  6. Step 6: Final answer
    x = 17,839.73

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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.