Home / 20,461.32-28,233.09-11,508.12

Finding the Fourth Proportional to 20,461.32, 28,233.09 and 11,508.12

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Solution

The fourth proportional to 20,461.32, 28,233.09 and 11,508.12 is: 15,879.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.32 : 28,233.09 = 11,508.12 : x
  2. Step 2: Convert to fraction form
    20,461.32/28,233.09 = 11,508.12/x
  3. Step 3: Cross multiply
    20,461.32x = 28,233.09 × 11,508.12
  4. Step 4: Simplify right side
    20,461.32x = 324,909,787.69
  5. Step 5: Solve for x
    x = 324,909,787.69/20,461.32
  6. Step 6: Final answer
    x = 15,879.22

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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.