Home / 20,488.05-28,274.04-11,535.88

Finding the Fourth Proportional to 20,488.05, 28,274.04 and 11,535.88

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Solution

The fourth proportional to 20,488.05, 28,274.04 and 11,535.88 is: 15,919.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.05 : 28,274.04 = 11,535.88 : x
  2. Step 2: Convert to fraction form
    20,488.05/28,274.04 = 11,535.88/x
  3. Step 3: Cross multiply
    20,488.05x = 28,274.04 × 11,535.88
  4. Step 4: Simplify right side
    20,488.05x = 326,165,932.56
  5. Step 5: Solve for x
    x = 326,165,932.56/20,488.05
  6. Step 6: Final answer
    x = 15,919.81

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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.