Home / 27,687.06-38,207.88-15,111.72

Finding the Fourth Proportional to 27,687.06, 38,207.88 and 15,111.72

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Solution

The fourth proportional to 27,687.06, 38,207.88 and 15,111.72 is: 20,854.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.06 : 38,207.88 = 15,111.72 : x
  2. Step 2: Convert to fraction form
    27,687.06/38,207.88 = 15,111.72/x
  3. Step 3: Cross multiply
    27,687.06x = 38,207.88 × 15,111.72
  4. Step 4: Simplify right side
    27,687.06x = 577,386,784.35
  5. Step 5: Solve for x
    x = 577,386,784.35/27,687.06
  6. Step 6: Final answer
    x = 20,854.03

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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.