Home / 18,088.20-27,132.30-11,478.60

Finding the Fourth Proportional to 18,088.20, 27,132.30 and 11,478.60

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Solution

The fourth proportional to 18,088.20, 27,132.30 and 11,478.60 is: 17,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,088.20 : 27,132.30 = 11,478.60 : x
  2. Step 2: Convert to fraction form
    18,088.20/27,132.30 = 11,478.60/x
  3. Step 3: Cross multiply
    18,088.20x = 27,132.30 × 11,478.60
  4. Step 4: Simplify right side
    18,088.20x = 311,440,818.78
  5. Step 5: Solve for x
    x = 311,440,818.78/18,088.20
  6. Step 6: Final answer
    x = 17,217.90

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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.