Home / 27,720.96-38,255.40-15,147.60

Finding the Fourth Proportional to 27,720.96, 38,255.40 and 15,147.60

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Solution

The fourth proportional to 27,720.96, 38,255.40 and 15,147.60 is: 20,903.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.96 : 38,255.40 = 15,147.60 : x
  2. Step 2: Convert to fraction form
    27,720.96/38,255.40 = 15,147.60/x
  3. Step 3: Cross multiply
    27,720.96x = 38,255.40 × 15,147.60
  4. Step 4: Simplify right side
    27,720.96x = 579,477,497.04
  5. Step 5: Solve for x
    x = 579,477,497.04/27,720.96
  6. Step 6: Final answer
    x = 20,903.95

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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.