Home / 20,068.32-27,691.83-11,115.33

Finding the Fourth Proportional to 20,068.32, 27,691.83 and 11,115.33

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Solution

The fourth proportional to 20,068.32, 27,691.83 and 11,115.33 is: 15,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,068.32 : 27,691.83 = 11,115.33 : x
  2. Step 2: Convert to fraction form
    20,068.32/27,691.83 = 11,115.33/x
  3. Step 3: Cross multiply
    20,068.32x = 27,691.83 × 11,115.33
  4. Step 4: Simplify right side
    20,068.32x = 307,803,828.75
  5. Step 5: Solve for x
    x = 307,803,828.75/20,068.32
  6. Step 6: Final answer
    x = 15,337.80

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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.