Home / 27,661.80-38,173.31-15,086.55

Finding the Fourth Proportional to 27,661.80, 38,173.31 and 15,086.55

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Solution

The fourth proportional to 27,661.80, 38,173.31 and 15,086.55 is: 20,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,661.80 : 38,173.31 = 15,086.55 : x
  2. Step 2: Convert to fraction form
    27,661.80/38,173.31 = 15,086.55/x
  3. Step 3: Cross multiply
    27,661.80x = 38,173.31 × 15,086.55
  4. Step 4: Simplify right side
    27,661.80x = 575,903,474.55
  5. Step 5: Solve for x
    x = 575,903,474.55/27,661.80
  6. Step 6: Final answer
    x = 20,819.45

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Half scale
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Double scale
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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.