Home / 18,325.80-27,502.20-12,388.68

Finding the Fourth Proportional to 18,325.80, 27,502.20 and 12,388.68

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Solution

The fourth proportional to 18,325.80, 27,502.20 and 12,388.68 is: 18,592.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,325.80 : 27,502.20 = 12,388.68 : x
  2. Step 2: Convert to fraction form
    18,325.80/27,502.20 = 12,388.68/x
  3. Step 3: Cross multiply
    18,325.80x = 27,502.20 × 12,388.68
  4. Step 4: Simplify right side
    18,325.80x = 340,715,955.10
  5. Step 5: Solve for x
    x = 340,715,955.10/18,325.80
  6. Step 6: Final answer
    x = 18,592.15

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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.