Home / 20,078.29-30,132.60-10,225.84

Finding the Fourth Proportional to 20,078.29, 30,132.60 and 10,225.84

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Solution

The fourth proportional to 20,078.29, 30,132.60 and 10,225.84 is: 15,346.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.29 : 30,132.60 = 10,225.84 : x
  2. Step 2: Convert to fraction form
    20,078.29/30,132.60 = 10,225.84/x
  3. Step 3: Cross multiply
    20,078.29x = 30,132.60 × 10,225.84
  4. Step 4: Simplify right side
    20,078.29x = 308,131,146.38
  5. Step 5: Solve for x
    x = 308,131,146.38/20,078.29
  6. Step 6: Final answer
    x = 15,346.48

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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.