Home / 18,520.11-27,779.88-4,480.02

Finding the Fourth Proportional to 18,520.11, 27,779.88 and 4,480.02

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Solution

The fourth proportional to 18,520.11, 27,779.88 and 4,480.02 is: 6,719.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.11 : 27,779.88 = 4,480.02 : x
  2. Step 2: Convert to fraction form
    18,520.11/27,779.88 = 4,480.02/x
  3. Step 3: Cross multiply
    18,520.11x = 27,779.88 × 4,480.02
  4. Step 4: Simplify right side
    18,520.11x = 124,454,418.00
  5. Step 5: Solve for x
    x = 124,454,418.00/18,520.11
  6. Step 6: Final answer
    x = 6,719.96

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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.