Home / 28,147.55-38,841.86-15,572.30

Finding the Fourth Proportional to 28,147.55, 38,841.86 and 15,572.30

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Solution

The fourth proportional to 28,147.55, 38,841.86 and 15,572.30 is: 21,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.55 : 38,841.86 = 15,572.30 : x
  2. Step 2: Convert to fraction form
    28,147.55/38,841.86 = 15,572.30/x
  3. Step 3: Cross multiply
    28,147.55x = 38,841.86 × 15,572.30
  4. Step 4: Simplify right side
    28,147.55x = 604,856,902.27
  5. Step 5: Solve for x
    x = 604,856,902.27/28,147.55
  6. Step 6: Final answer
    x = 21,488.80

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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.