Home / 12,439.66-18,655-4,118.14

Finding the Fourth Proportional to 12,439.66, 18,655 and 4,118.14

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Solution

The fourth proportional to 12,439.66, 18,655 and 4,118.14 is: 6,175.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.66 : 18,655 = 4,118.14 : x
  2. Step 2: Convert to fraction form
    12,439.66/18,655 = 4,118.14/x
  3. Step 3: Cross multiply
    12,439.66x = 18,655 × 4,118.14
  4. Step 4: Simplify right side
    12,439.66x = 76,823,901.70
  5. Step 5: Solve for x
    x = 76,823,901.70/12,439.66
  6. Step 6: Final answer
    x = 6,175.72

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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.