Home / 27,816.06-38,385.54-15,879.12

Finding the Fourth Proportional to 27,816.06, 38,385.54 and 15,879.12

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Solution

The fourth proportional to 27,816.06, 38,385.54 and 15,879.12 is: 21,912.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,816.06 : 38,385.54 = 15,879.12 : x
  2. Step 2: Convert to fraction form
    27,816.06/38,385.54 = 15,879.12/x
  3. Step 3: Cross multiply
    27,816.06x = 38,385.54 × 15,879.12
  4. Step 4: Simplify right side
    27,816.06x = 609,528,595.92
  5. Step 5: Solve for x
    x = 609,528,595.92/27,816.06
  6. Step 6: Final answer
    x = 21,912.83

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Half scale
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Double scale
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Similar ratio
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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.