Home / 27,765.15-38,316.20-15,189.63

Finding the Fourth Proportional to 27,765.15, 38,316.20 and 15,189.63

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Solution

The fourth proportional to 27,765.15, 38,316.20 and 15,189.63 is: 20,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,765.15 : 38,316.20 = 15,189.63 : x
  2. Step 2: Convert to fraction form
    27,765.15/38,316.20 = 15,189.63/x
  3. Step 3: Cross multiply
    27,765.15x = 38,316.20 × 15,189.63
  4. Step 4: Simplify right side
    27,765.15x = 582,008,901.01
  5. Step 5: Solve for x
    x = 582,008,901.01/27,765.15
  6. Step 6: Final answer
    x = 20,961.85

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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.