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Finding the Fourth Proportional to 15,123.75, 22,685.63 and 4,179.75

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Solution

The fourth proportional to 15,123.75, 22,685.63 and 4,179.75 is: 6,269.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,123.75 : 22,685.63 = 4,179.75 : x
  2. Step 2: Convert to fraction form
    15,123.75/22,685.63 = 4,179.75/x
  3. Step 3: Cross multiply
    15,123.75x = 22,685.63 × 4,179.75
  4. Step 4: Simplify right side
    15,123.75x = 94,820,241.09
  5. Step 5: Solve for x
    x = 94,820,241.09/15,123.75
  6. Step 6: Final answer
    x = 6,269.63

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.