Home / 20,404.19-30,540.66-10,530.02

Finding the Fourth Proportional to 20,404.19, 30,540.66 and 10,530.02

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Solution

The fourth proportional to 20,404.19, 30,540.66 and 10,530.02 is: 15,761.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.19 : 30,540.66 = 10,530.02 : x
  2. Step 2: Convert to fraction form
    20,404.19/30,540.66 = 10,530.02/x
  3. Step 3: Cross multiply
    20,404.19x = 30,540.66 × 10,530.02
  4. Step 4: Simplify right side
    20,404.19x = 321,593,760.61
  5. Step 5: Solve for x
    x = 321,593,760.61/20,404.19
  6. Step 6: Final answer
    x = 15,761.16

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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.