Home / 21,447.20-32,171.16-8,969.12

Finding the Fourth Proportional to 21,447.20, 32,171.16 and 8,969.12

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Solution

The fourth proportional to 21,447.20, 32,171.16 and 8,969.12 is: 13,453.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447.20 : 32,171.16 = 8,969.12 : x
  2. Step 2: Convert to fraction form
    21,447.20/32,171.16 = 8,969.12/x
  3. Step 3: Cross multiply
    21,447.20x = 32,171.16 × 8,969.12
  4. Step 4: Simplify right side
    21,447.20x = 288,546,994.58
  5. Step 5: Solve for x
    x = 288,546,994.58/21,447.20
  6. Step 6: Final answer
    x = 13,453.83

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1.5x scale

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.