Home / 10,385.91-15,572.34-6,872.13

Finding the Fourth Proportional to 10,385.91, 15,572.34 and 6,872.13

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Solution

The fourth proportional to 10,385.91, 15,572.34 and 6,872.13 is: 10,303.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.91 : 15,572.34 = 6,872.13 : x
  2. Step 2: Convert to fraction form
    10,385.91/15,572.34 = 6,872.13/x
  3. Step 3: Cross multiply
    10,385.91x = 15,572.34 × 6,872.13
  4. Step 4: Simplify right side
    10,385.91x = 107,015,144.88
  5. Step 5: Solve for x
    x = 107,015,144.88/10,385.91
  6. Step 6: Final answer
    x = 10,303.88

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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.