Home / 20,148.39-30,206.48-10,147.73

Finding the Fourth Proportional to 20,148.39, 30,206.48 and 10,147.73

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Solution

The fourth proportional to 20,148.39, 30,206.48 and 10,147.73 is: 15,213.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.39 : 30,206.48 = 10,147.73 : x
  2. Step 2: Convert to fraction form
    20,148.39/30,206.48 = 10,147.73/x
  3. Step 3: Cross multiply
    20,148.39x = 30,206.48 × 10,147.73
  4. Step 4: Simplify right side
    20,148.39x = 306,527,001.52
  5. Step 5: Solve for x
    x = 306,527,001.52/20,148.39
  6. Step 6: Final answer
    x = 15,213.47

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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.