Home / 18,412.20-27,618.30-10,117.80

Finding the Fourth Proportional to 18,412.20, 27,618.30 and 10,117.80

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Solution

The fourth proportional to 18,412.20, 27,618.30 and 10,117.80 is: 15,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.20 : 27,618.30 = 10,117.80 : x
  2. Step 2: Convert to fraction form
    18,412.20/27,618.30 = 10,117.80/x
  3. Step 3: Cross multiply
    18,412.20x = 27,618.30 × 10,117.80
  4. Step 4: Simplify right side
    18,412.20x = 279,436,435.74
  5. Step 5: Solve for x
    x = 279,436,435.74/18,412.20
  6. Step 6: Final answer
    x = 15,176.70

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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.