Home / 27,615.03-38,108.73-15,039.78

Finding the Fourth Proportional to 27,615.03, 38,108.73 and 15,039.78

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Solution

The fourth proportional to 27,615.03, 38,108.73 and 15,039.78 is: 20,754.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,615.03 : 38,108.73 = 15,039.78 : x
  2. Step 2: Convert to fraction form
    27,615.03/38,108.73 = 15,039.78/x
  3. Step 3: Cross multiply
    27,615.03x = 38,108.73 × 15,039.78
  4. Step 4: Simplify right side
    27,615.03x = 573,146,724.74
  5. Step 5: Solve for x
    x = 573,146,724.74/27,615.03
  6. Step 6: Final answer
    x = 20,754.89

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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.