Home / 28,129.93-38,817.70-15,380.73

Finding the Fourth Proportional to 28,129.93, 38,817.70 and 15,380.73

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Solution

The fourth proportional to 28,129.93, 38,817.70 and 15,380.73 is: 21,224.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.93 : 38,817.70 = 15,380.73 : x
  2. Step 2: Convert to fraction form
    28,129.93/38,817.70 = 15,380.73/x
  3. Step 3: Cross multiply
    28,129.93x = 38,817.70 × 15,380.73
  4. Step 4: Simplify right side
    28,129.93x = 597,044,524.47
  5. Step 5: Solve for x
    x = 597,044,524.47/28,129.93
  6. Step 6: Final answer
    x = 21,224.53

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Find fourth proportional to 28,130.93, 38,819.08 and 15,381.73
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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.