Home / 15,609.11-21,540.74-8,535.38

Finding the Fourth Proportional to 15,609.11, 21,540.74 and 8,535.38

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Solution

The fourth proportional to 15,609.11, 21,540.74 and 8,535.38 is: 11,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,609.11 : 21,540.74 = 8,535.38 : x
  2. Step 2: Convert to fraction form
    15,609.11/21,540.74 = 8,535.38/x
  3. Step 3: Cross multiply
    15,609.11x = 21,540.74 × 8,535.38
  4. Step 4: Simplify right side
    15,609.11x = 183,858,251.00
  5. Step 5: Solve for x
    x = 183,858,251.00/15,609.11
  6. Step 6: Final answer
    x = 11,778.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.