Home / 27,979.12-38,609.40-15,401.44

Finding the Fourth Proportional to 27,979.12, 38,609.40 and 15,401.44

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Solution

The fourth proportional to 27,979.12, 38,609.40 and 15,401.44 is: 21,253.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.12 : 38,609.40 = 15,401.44 : x
  2. Step 2: Convert to fraction form
    27,979.12/38,609.40 = 15,401.44/x
  3. Step 3: Cross multiply
    27,979.12x = 38,609.40 × 15,401.44
  4. Step 4: Simplify right side
    27,979.12x = 594,640,357.54
  5. Step 5: Solve for x
    x = 594,640,357.54/27,979.12
  6. Step 6: Final answer
    x = 21,253.00

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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.