Home / 20,837.55-28,754.67-11,404.29

Finding the Fourth Proportional to 20,837.55, 28,754.67 and 11,404.29

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Solution

The fourth proportional to 20,837.55, 28,754.67 and 11,404.29 is: 15,737.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.55 : 28,754.67 = 11,404.29 : x
  2. Step 2: Convert to fraction form
    20,837.55/28,754.67 = 11,404.29/x
  3. Step 3: Cross multiply
    20,837.55x = 28,754.67 × 11,404.29
  4. Step 4: Simplify right side
    20,837.55x = 327,926,595.53
  5. Step 5: Solve for x
    x = 327,926,595.53/20,837.55
  6. Step 6: Final answer
    x = 15,737.29

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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.