Home / 21,577.20-32,370.42-12,221.64

Finding the Fourth Proportional to 21,577.20, 32,370.42 and 12,221.64

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Solution

The fourth proportional to 21,577.20, 32,370.42 and 12,221.64 is: 18,335.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,577.20 : 32,370.42 = 12,221.64 : x
  2. Step 2: Convert to fraction form
    21,577.20/32,370.42 = 12,221.64/x
  3. Step 3: Cross multiply
    21,577.20x = 32,370.42 × 12,221.64
  4. Step 4: Simplify right side
    21,577.20x = 395,619,619.89
  5. Step 5: Solve for x
    x = 395,619,619.89/21,577.20
  6. Step 6: Final answer
    x = 18,335.08

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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.