Home / 27,661.40-38,173-15,086.16

Finding the Fourth Proportional to 27,661.40, 38,173 and 15,086.16

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Solution

The fourth proportional to 27,661.40, 38,173 and 15,086.16 is: 20,819.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,661.40 : 38,173 = 15,086.16 : x
  2. Step 2: Convert to fraction form
    27,661.40/38,173 = 15,086.16/x
  3. Step 3: Cross multiply
    27,661.40x = 38,173 × 15,086.16
  4. Step 4: Simplify right side
    27,661.40x = 575,883,985.68
  5. Step 5: Solve for x
    x = 575,883,985.68/27,661.40
  6. Step 6: Final answer
    x = 20,819.05

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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.