Home / 20,340.24-30,510.39-13,326.12

Finding the Fourth Proportional to 20,340.24, 30,510.39 and 13,326.12

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Solution

The fourth proportional to 20,340.24, 30,510.39 and 13,326.12 is: 19,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.24 : 30,510.39 = 13,326.12 : x
  2. Step 2: Convert to fraction form
    20,340.24/30,510.39 = 13,326.12/x
  3. Step 3: Cross multiply
    20,340.24x = 30,510.39 × 13,326.12
  4. Step 4: Simplify right side
    20,340.24x = 406,585,118.39
  5. Step 5: Solve for x
    x = 406,585,118.39/20,340.24
  6. Step 6: Final answer
    x = 19,989.20

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Similar ratio
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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.