Home / 20,508.54-28,301.79-11,077.11

Finding the Fourth Proportional to 20,508.54, 28,301.79 and 11,077.11

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Solution

The fourth proportional to 20,508.54, 28,301.79 and 11,077.11 is: 15,286.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.54 : 28,301.79 = 11,077.11 : x
  2. Step 2: Convert to fraction form
    20,508.54/28,301.79 = 11,077.11/x
  3. Step 3: Cross multiply
    20,508.54x = 28,301.79 × 11,077.11
  4. Step 4: Simplify right side
    20,508.54x = 313,502,041.03
  5. Step 5: Solve for x
    x = 313,502,041.03/20,508.54
  6. Step 6: Final answer
    x = 15,286.41

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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.