Home / 28,132.60-38,822.94-15,385.84

Finding the Fourth Proportional to 28,132.60, 38,822.94 and 15,385.84

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Solution

The fourth proportional to 28,132.60, 38,822.94 and 15,385.84 is: 21,232.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.60 : 38,822.94 = 15,385.84 : x
  2. Step 2: Convert to fraction form
    28,132.60/38,822.94 = 15,385.84/x
  3. Step 3: Cross multiply
    28,132.60x = 38,822.94 × 15,385.84
  4. Step 4: Simplify right side
    28,132.60x = 597,323,543.17
  5. Step 5: Solve for x
    x = 597,323,543.17/28,132.60
  6. Step 6: Final answer
    x = 21,232.43

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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.