Home / 27,690.56-38,214.12-15,755.96

Finding the Fourth Proportional to 27,690.56, 38,214.12 and 15,755.96

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Solution

The fourth proportional to 27,690.56, 38,214.12 and 15,755.96 is: 21,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,690.56 : 38,214.12 = 15,755.96 : x
  2. Step 2: Convert to fraction form
    27,690.56/38,214.12 = 15,755.96/x
  3. Step 3: Cross multiply
    27,690.56x = 38,214.12 × 15,755.96
  4. Step 4: Simplify right side
    27,690.56x = 602,100,146.16
  5. Step 5: Solve for x
    x = 602,100,146.16/27,690.56
  6. Step 6: Final answer
    x = 21,743.88

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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.