Home / 20,512.73-28,307.60-11,081.29

Finding the Fourth Proportional to 20,512.73, 28,307.60 and 11,081.29

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Solution

The fourth proportional to 20,512.73, 28,307.60 and 11,081.29 is: 15,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.73 : 28,307.60 = 11,081.29 : x
  2. Step 2: Convert to fraction form
    20,512.73/28,307.60 = 11,081.29/x
  3. Step 3: Cross multiply
    20,512.73x = 28,307.60 × 11,081.29
  4. Step 4: Simplify right side
    20,512.73x = 313,684,740.17
  5. Step 5: Solve for x
    x = 313,684,740.17/20,512.73
  6. Step 6: Final answer
    x = 15,292.20

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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.