Home / 20,463.19-28,231.21-11,508.64

Finding the Fourth Proportional to 20,463.19, 28,231.21 and 11,508.64

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Solution

The fourth proportional to 20,463.19, 28,231.21 and 11,508.64 is: 15,877.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463.19 : 28,231.21 = 11,508.64 : x
  2. Step 2: Convert to fraction form
    20,463.19/28,231.21 = 11,508.64/x
  3. Step 3: Cross multiply
    20,463.19x = 28,231.21 × 11,508.64
  4. Step 4: Simplify right side
    20,463.19x = 324,902,832.65
  5. Step 5: Solve for x
    x = 324,902,832.65/20,463.19
  6. Step 6: Final answer
    x = 15,877.43

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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.