Home / 20,161.28-30,242.60-15,488.39

Finding the Fourth Proportional to 20,161.28, 30,242.60 and 15,488.39

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Solution

The fourth proportional to 20,161.28, 30,242.60 and 15,488.39 is: 23,233.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.28 : 30,242.60 = 15,488.39 : x
  2. Step 2: Convert to fraction form
    20,161.28/30,242.60 = 15,488.39/x
  3. Step 3: Cross multiply
    20,161.28x = 30,242.60 × 15,488.39
  4. Step 4: Simplify right side
    20,161.28x = 468,409,239.66
  5. Step 5: Solve for x
    x = 468,409,239.66/20,161.28
  6. Step 6: Final answer
    x = 23,233.11

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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.