Home / 20,463.32-28,231.38-11,508.77

Finding the Fourth Proportional to 20,463.32, 28,231.38 and 11,508.77

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Solution

The fourth proportional to 20,463.32, 28,231.38 and 11,508.77 is: 15,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463.32 : 28,231.38 = 11,508.77 : x
  2. Step 2: Convert to fraction form
    20,463.32/28,231.38 = 11,508.77/x
  3. Step 3: Cross multiply
    20,463.32x = 28,231.38 × 11,508.77
  4. Step 4: Simplify right side
    20,463.32x = 324,908,318.05
  5. Step 5: Solve for x
    x = 324,908,318.05/20,463.32
  6. Step 6: Final answer
    x = 15,877.60

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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.