Home / 21,909.32-32,879.82-8,765.36

Finding the Fourth Proportional to 21,909.32, 32,879.82 and 8,765.36

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Solution

The fourth proportional to 21,909.32, 32,879.82 and 8,765.36 is: 13,154.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.32 : 32,879.82 = 8,765.36 : x
  2. Step 2: Convert to fraction form
    21,909.32/32,879.82 = 8,765.36/x
  3. Step 3: Cross multiply
    21,909.32x = 32,879.82 × 8,765.36
  4. Step 4: Simplify right side
    21,909.32x = 288,203,459.04
  5. Step 5: Solve for x
    x = 288,203,459.04/21,909.32
  6. Step 6: Final answer
    x = 13,154.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.