Home / 18,281.40-27,422.10-13,299.90

Finding the Fourth Proportional to 18,281.40, 27,422.10 and 13,299.90

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Solution

The fourth proportional to 18,281.40, 27,422.10 and 13,299.90 is: 19,949.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,281.40 : 27,422.10 = 13,299.90 : x
  2. Step 2: Convert to fraction form
    18,281.40/27,422.10 = 13,299.90/x
  3. Step 3: Cross multiply
    18,281.40x = 27,422.10 × 13,299.90
  4. Step 4: Simplify right side
    18,281.40x = 364,711,187.79
  5. Step 5: Solve for x
    x = 364,711,187.79/18,281.40
  6. Step 6: Final answer
    x = 19,949.85

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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.