Home / 20,553.53-30,872.37-13,543.59

Finding the Fourth Proportional to 20,553.53, 30,872.37 and 13,543.59

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Solution

The fourth proportional to 20,553.53, 30,872.37 and 13,543.59 is: 20,343.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.53 : 30,872.37 = 13,543.59 : x
  2. Step 2: Convert to fraction form
    20,553.53/30,872.37 = 13,543.59/x
  3. Step 3: Cross multiply
    20,553.53x = 30,872.37 × 13,543.59
  4. Step 4: Simplify right side
    20,553.53x = 418,122,721.61
  5. Step 5: Solve for x
    x = 418,122,721.61/20,553.53
  6. Step 6: Final answer
    x = 20,343.11

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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.