Home / 21,765.20-32,680.20-15,220.40

Finding the Fourth Proportional to 21,765.20, 32,680.20 and 15,220.40

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Solution

The fourth proportional to 21,765.20, 32,680.20 and 15,220.40 is: 22,853.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.20 : 32,680.20 = 15,220.40 : x
  2. Step 2: Convert to fraction form
    21,765.20/32,680.20 = 15,220.40/x
  3. Step 3: Cross multiply
    21,765.20x = 32,680.20 × 15,220.40
  4. Step 4: Simplify right side
    21,765.20x = 497,405,716.08
  5. Step 5: Solve for x
    x = 497,405,716.08/21,765.20
  6. Step 6: Final answer
    x = 22,853.26

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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.