Home / 21,948.12-32,961.84-20,189.88

Finding the Fourth Proportional to 21,948.12, 32,961.84 and 20,189.88

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Solution

The fourth proportional to 21,948.12, 32,961.84 and 20,189.88 is: 30,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,948.12 : 32,961.84 = 20,189.88 : x
  2. Step 2: Convert to fraction form
    21,948.12/32,961.84 = 20,189.88/x
  3. Step 3: Cross multiply
    21,948.12x = 32,961.84 × 20,189.88
  4. Step 4: Simplify right side
    21,948.12x = 665,495,594.18
  5. Step 5: Solve for x
    x = 665,495,594.18/21,948.12
  6. Step 6: Final answer
    x = 30,321.30

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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.