Home / 20,433.47-28,195.29-11,480.54

Finding the Fourth Proportional to 20,433.47, 28,195.29 and 11,480.54

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Solution

The fourth proportional to 20,433.47, 28,195.29 and 11,480.54 is: 15,841.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.47 : 28,195.29 = 11,480.54 : x
  2. Step 2: Convert to fraction form
    20,433.47/28,195.29 = 11,480.54/x
  3. Step 3: Cross multiply
    20,433.47x = 28,195.29 × 11,480.54
  4. Step 4: Simplify right side
    20,433.47x = 323,697,013.68
  5. Step 5: Solve for x
    x = 323,697,013.68/20,433.47
  6. Step 6: Final answer
    x = 15,841.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.