Home / 27,765.38-38,316.77-15,190.40

Finding the Fourth Proportional to 27,765.38, 38,316.77 and 15,190.40

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Solution

The fourth proportional to 27,765.38, 38,316.77 and 15,190.40 is: 20,963.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,765.38 : 38,316.77 = 15,190.40 : x
  2. Step 2: Convert to fraction form
    27,765.38/38,316.77 = 15,190.40/x
  3. Step 3: Cross multiply
    27,765.38x = 38,316.77 × 15,190.40
  4. Step 4: Simplify right side
    27,765.38x = 582,046,909.40
  5. Step 5: Solve for x
    x = 582,046,909.40/27,765.38
  6. Step 6: Final answer
    x = 20,963.05

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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.