Home / 27,745.14-38,282.31-15,805.20

Finding the Fourth Proportional to 27,745.14, 38,282.31 and 15,805.20

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Solution

The fourth proportional to 27,745.14, 38,282.31 and 15,805.20 is: 21,807.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,745.14 : 38,282.31 = 15,805.20 : x
  2. Step 2: Convert to fraction form
    27,745.14/38,282.31 = 15,805.20/x
  3. Step 3: Cross multiply
    27,745.14x = 38,282.31 × 15,805.20
  4. Step 4: Simplify right side
    27,745.14x = 605,059,566.01
  5. Step 5: Solve for x
    x = 605,059,566.01/27,745.14
  6. Step 6: Final answer
    x = 21,807.77

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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.