Home / 20,432.05-28,195.44-11,479.93

Finding the Fourth Proportional to 20,432.05, 28,195.44 and 11,479.93

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Solution

The fourth proportional to 20,432.05, 28,195.44 and 11,479.93 is: 15,841.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.05 : 28,195.44 = 11,479.93 : x
  2. Step 2: Convert to fraction form
    20,432.05/28,195.44 = 11,479.93/x
  3. Step 3: Cross multiply
    20,432.05x = 28,195.44 × 11,479.93
  4. Step 4: Simplify right side
    20,432.05x = 323,681,628.56
  5. Step 5: Solve for x
    x = 323,681,628.56/20,432.05
  6. Step 6: Final answer
    x = 15,841.86

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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.