Home / 20,532.15-30,728.03-13,031.96

Finding the Fourth Proportional to 20,532.15, 30,728.03 and 13,031.96

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Solution

The fourth proportional to 20,532.15, 30,728.03 and 13,031.96 is: 19,503.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.15 : 30,728.03 = 13,031.96 : x
  2. Step 2: Convert to fraction form
    20,532.15/30,728.03 = 13,031.96/x
  3. Step 3: Cross multiply
    20,532.15x = 30,728.03 × 13,031.96
  4. Step 4: Simplify right side
    20,532.15x = 400,446,239.04
  5. Step 5: Solve for x
    x = 400,446,239.04/20,532.15
  6. Step 6: Final answer
    x = 19,503.38

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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.