Home / 20,512.56-28,307.35-11,081.13

Finding the Fourth Proportional to 20,512.56, 28,307.35 and 11,081.13

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Solution

The fourth proportional to 20,512.56, 28,307.35 and 11,081.13 is: 15,291.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.56 : 28,307.35 = 11,081.13 : x
  2. Step 2: Convert to fraction form
    20,512.56/28,307.35 = 11,081.13/x
  3. Step 3: Cross multiply
    20,512.56x = 28,307.35 × 11,081.13
  4. Step 4: Simplify right side
    20,512.56x = 313,677,425.31
  5. Step 5: Solve for x
    x = 313,677,425.31/20,512.56
  6. Step 6: Final answer
    x = 15,291.97

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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.