Home / 21,988.20-32,982.30-10,324.20

Finding the Fourth Proportional to 21,988.20, 32,982.30 and 10,324.20

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Solution

The fourth proportional to 21,988.20, 32,982.30 and 10,324.20 is: 15,486.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.20 : 32,982.30 = 10,324.20 : x
  2. Step 2: Convert to fraction form
    21,988.20/32,982.30 = 10,324.20/x
  3. Step 3: Cross multiply
    21,988.20x = 32,982.30 × 10,324.20
  4. Step 4: Simplify right side
    21,988.20x = 340,515,861.66
  5. Step 5: Solve for x
    x = 340,515,861.66/21,988.20
  6. Step 6: Final answer
    x = 15,486.30

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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.