Home / 10,305.14-15,423.15-8,456.18

Finding the Fourth Proportional to 10,305.14, 15,423.15 and 8,456.18

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Solution

The fourth proportional to 10,305.14, 15,423.15 and 8,456.18 is: 12,655.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,305.14 : 15,423.15 = 8,456.18 : x
  2. Step 2: Convert to fraction form
    10,305.14/15,423.15 = 8,456.18/x
  3. Step 3: Cross multiply
    10,305.14x = 15,423.15 × 8,456.18
  4. Step 4: Simplify right side
    10,305.14x = 130,420,932.57
  5. Step 5: Solve for x
    x = 130,420,932.57/10,305.14
  6. Step 6: Final answer
    x = 12,655.91

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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.