Home / 21,553.53-29,734.11-15,575.73

Finding the Fourth Proportional to 21,553.53, 29,734.11 and 15,575.73

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Solution

The fourth proportional to 21,553.53, 29,734.11 and 15,575.73 is: 21,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.53 : 29,734.11 = 15,575.73 : x
  2. Step 2: Convert to fraction form
    21,553.53/29,734.11 = 15,575.73/x
  3. Step 3: Cross multiply
    21,553.53x = 29,734.11 × 15,575.73
  4. Step 4: Simplify right side
    21,553.53x = 463,130,465.61
  5. Step 5: Solve for x
    x = 463,130,465.61/21,553.53
  6. Step 6: Final answer
    x = 21,487.45

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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.