Home / 27,854.97-38,442.62-15,920.02

Finding the Fourth Proportional to 27,854.97, 38,442.62 and 15,920.02

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Solution

The fourth proportional to 27,854.97, 38,442.62 and 15,920.02 is: 21,971.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,854.97 : 38,442.62 = 15,920.02 : x
  2. Step 2: Convert to fraction form
    27,854.97/38,442.62 = 15,920.02/x
  3. Step 3: Cross multiply
    27,854.97x = 38,442.62 × 15,920.02
  4. Step 4: Simplify right side
    27,854.97x = 612,007,199.65
  5. Step 5: Solve for x
    x = 612,007,199.65/27,854.97
  6. Step 6: Final answer
    x = 21,971.21

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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.