Home / 20,772.18-31,185.95-17,672.11

Finding the Fourth Proportional to 20,772.18, 31,185.95 and 17,672.11

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Solution

The fourth proportional to 20,772.18, 31,185.95 and 17,672.11 is: 26,531.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.18 : 31,185.95 = 17,672.11 : x
  2. Step 2: Convert to fraction form
    20,772.18/31,185.95 = 17,672.11/x
  3. Step 3: Cross multiply
    20,772.18x = 31,185.95 × 17,672.11
  4. Step 4: Simplify right side
    20,772.18x = 551,121,372.53
  5. Step 5: Solve for x
    x = 551,121,372.53/20,772.18
  6. Step 6: Final answer
    x = 26,531.71

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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.