Home / 27,854.88-38,445.21-15,917.10

Finding the Fourth Proportional to 27,854.88, 38,445.21 and 15,917.10

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Solution

The fourth proportional to 27,854.88, 38,445.21 and 15,917.10 is: 21,968.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,854.88 : 38,445.21 = 15,917.10 : x
  2. Step 2: Convert to fraction form
    27,854.88/38,445.21 = 15,917.10/x
  3. Step 3: Cross multiply
    27,854.88x = 38,445.21 × 15,917.10
  4. Step 4: Simplify right side
    27,854.88x = 611,936,252.09
  5. Step 5: Solve for x
    x = 611,936,252.09/27,854.88
  6. Step 6: Final answer
    x = 21,968.73

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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.