Home / 18,520.13-27,780.20-4,669.13

Finding the Fourth Proportional to 18,520.13, 27,780.20 and 4,669.13

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Solution

The fourth proportional to 18,520.13, 27,780.20 and 4,669.13 is: 7,003.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.13 : 27,780.20 = 4,669.13 : x
  2. Step 2: Convert to fraction form
    18,520.13/27,780.20 = 4,669.13/x
  3. Step 3: Cross multiply
    18,520.13x = 27,780.20 × 4,669.13
  4. Step 4: Simplify right side
    18,520.13x = 129,709,202.98
  5. Step 5: Solve for x
    x = 129,709,202.98/18,520.13
  6. Step 6: Final answer
    x = 7,003.69

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Similar ratio
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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.