Home / 10,872.20-15,003.57-6,156.68

Finding the Fourth Proportional to 10,872.20, 15,003.57 and 6,156.68

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Solution

The fourth proportional to 10,872.20, 15,003.57 and 6,156.68 is: 8,496.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,872.20 : 15,003.57 = 6,156.68 : x
  2. Step 2: Convert to fraction form
    10,872.20/15,003.57 = 6,156.68/x
  3. Step 3: Cross multiply
    10,872.20x = 15,003.57 × 6,156.68
  4. Step 4: Simplify right side
    10,872.20x = 92,372,179.35
  5. Step 5: Solve for x
    x = 92,372,179.35/10,872.20
  6. Step 6: Final answer
    x = 8,496.18

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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.