Home / 11,686.20-16,127.20-6,381.24

Finding the Fourth Proportional to 11,686.20, 16,127.20 and 6,381.24

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Solution

The fourth proportional to 11,686.20, 16,127.20 and 6,381.24 is: 8,806.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,686.20 : 16,127.20 = 6,381.24 : x
  2. Step 2: Convert to fraction form
    11,686.20/16,127.20 = 6,381.24/x
  3. Step 3: Cross multiply
    11,686.20x = 16,127.20 × 6,381.24
  4. Step 4: Simplify right side
    11,686.20x = 102,911,533.73
  5. Step 5: Solve for x
    x = 102,911,533.73/11,686.20
  6. Step 6: Final answer
    x = 8,806.24

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Half scale
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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.