Home / 27,627.88-38,115.70-15,689.60

Finding the Fourth Proportional to 27,627.88, 38,115.70 and 15,689.60

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Solution

The fourth proportional to 27,627.88, 38,115.70 and 15,689.60 is: 21,645.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,627.88 : 38,115.70 = 15,689.60 : x
  2. Step 2: Convert to fraction form
    27,627.88/38,115.70 = 15,689.60/x
  3. Step 3: Cross multiply
    27,627.88x = 38,115.70 × 15,689.60
  4. Step 4: Simplify right side
    27,627.88x = 598,020,086.72
  5. Step 5: Solve for x
    x = 598,020,086.72/27,627.88
  6. Step 6: Final answer
    x = 21,645.53

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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.