Home / 27,857.31-38,443.10-15,282.15

Finding the Fourth Proportional to 27,857.31, 38,443.10 and 15,282.15

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Solution

The fourth proportional to 27,857.31, 38,443.10 and 15,282.15 is: 21,089.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,857.31 : 38,443.10 = 15,282.15 : x
  2. Step 2: Convert to fraction form
    27,857.31/38,443.10 = 15,282.15/x
  3. Step 3: Cross multiply
    27,857.31x = 38,443.10 × 15,282.15
  4. Step 4: Simplify right side
    27,857.31x = 587,493,144.25
  5. Step 5: Solve for x
    x = 587,493,144.25/27,857.31
  6. Step 6: Final answer
    x = 21,089.37

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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.