Home / 27,660.25-38,171.15-15,085

Finding the Fourth Proportional to 27,660.25, 38,171.15 and 15,085

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Solution

The fourth proportional to 27,660.25, 38,171.15 and 15,085 is: 20,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,660.25 : 38,171.15 = 15,085 : x
  2. Step 2: Convert to fraction form
    27,660.25/38,171.15 = 15,085/x
  3. Step 3: Cross multiply
    27,660.25x = 38,171.15 × 15,085
  4. Step 4: Simplify right side
    27,660.25x = 575,811,797.75
  5. Step 5: Solve for x
    x = 575,811,797.75/27,660.25
  6. Step 6: Final answer
    x = 20,817.30

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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.