Home / 27,789.48-38,348.90-15,213.80

Finding the Fourth Proportional to 27,789.48, 38,348.90 and 15,213.80

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Solution

The fourth proportional to 27,789.48, 38,348.90 and 15,213.80 is: 20,994.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,789.48 : 38,348.90 = 15,213.80 : x
  2. Step 2: Convert to fraction form
    27,789.48/38,348.90 = 15,213.80/x
  3. Step 3: Cross multiply
    27,789.48x = 38,348.90 × 15,213.80
  4. Step 4: Simplify right side
    27,789.48x = 583,432,494.82
  5. Step 5: Solve for x
    x = 583,432,494.82/27,789.48
  6. Step 6: Final answer
    x = 20,994.73

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Half scale
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Double scale
Find fourth proportional to 27,790.48, 38,350.28 and 15,214.80
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.