Home / 10,123.20-15,186.96-4,276.80

Finding the Fourth Proportional to 10,123.20, 15,186.96 and 4,276.80

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Solution

The fourth proportional to 10,123.20, 15,186.96 and 4,276.80 is: 6,416.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,123.20 : 15,186.96 = 4,276.80 : x
  2. Step 2: Convert to fraction form
    10,123.20/15,186.96 = 4,276.80/x
  3. Step 3: Cross multiply
    10,123.20x = 15,186.96 × 4,276.80
  4. Step 4: Simplify right side
    10,123.20x = 64,951,590.53
  5. Step 5: Solve for x
    x = 64,951,590.53/10,123.20
  6. Step 6: Final answer
    x = 6,416.11

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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.