Home / 22,080.20-30,459.96-13,121.36

Finding the Fourth Proportional to 22,080.20, 30,459.96 and 13,121.36

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Solution

The fourth proportional to 22,080.20, 30,459.96 and 13,121.36 is: 18,101.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,080.20 : 30,459.96 = 13,121.36 : x
  2. Step 2: Convert to fraction form
    22,080.20/30,459.96 = 13,121.36/x
  3. Step 3: Cross multiply
    22,080.20x = 30,459.96 × 13,121.36
  4. Step 4: Simplify right side
    22,080.20x = 399,676,100.75
  5. Step 5: Solve for x
    x = 399,676,100.75/22,080.20
  6. Step 6: Final answer
    x = 18,101.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.