Home / 27,857.42-38,443.38-15,282.20

Finding the Fourth Proportional to 27,857.42, 38,443.38 and 15,282.20

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Solution

The fourth proportional to 27,857.42, 38,443.38 and 15,282.20 is: 21,089.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,857.42 : 38,443.38 = 15,282.20 : x
  2. Step 2: Convert to fraction form
    27,857.42/38,443.38 = 15,282.20/x
  3. Step 3: Cross multiply
    27,857.42x = 38,443.38 × 15,282.20
  4. Step 4: Simplify right side
    27,857.42x = 587,499,421.84
  5. Step 5: Solve for x
    x = 587,499,421.84/27,857.42
  6. Step 6: Final answer
    x = 21,089.51

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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.