Home / 20,337.35-28,067.04-11,387.79

Finding the Fourth Proportional to 20,337.35, 28,067.04 and 11,387.79

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Solution

The fourth proportional to 20,337.35, 28,067.04 and 11,387.79 is: 15,715.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.35 : 28,067.04 = 11,387.79 : x
  2. Step 2: Convert to fraction form
    20,337.35/28,067.04 = 11,387.79/x
  3. Step 3: Cross multiply
    20,337.35x = 28,067.04 × 11,387.79
  4. Step 4: Simplify right side
    20,337.35x = 319,621,557.44
  5. Step 5: Solve for x
    x = 319,621,557.44/20,337.35
  6. Step 6: Final answer
    x = 15,715.99

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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.