Home / 20,908.60-28,854.07-11,348.57

Finding the Fourth Proportional to 20,908.60, 28,854.07 and 11,348.57

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Solution

The fourth proportional to 20,908.60, 28,854.07 and 11,348.57 is: 15,661.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.60 : 28,854.07 = 11,348.57 : x
  2. Step 2: Convert to fraction form
    20,908.60/28,854.07 = 11,348.57/x
  3. Step 3: Cross multiply
    20,908.60x = 28,854.07 × 11,348.57
  4. Step 4: Simplify right side
    20,908.60x = 327,452,433.18
  5. Step 5: Solve for x
    x = 327,452,433.18/20,908.60
  6. Step 6: Final answer
    x = 15,661.14

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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.