Home / 27,639.30-38,112.12-18,671.24

Finding the Fourth Proportional to 27,639.30, 38,112.12 and 18,671.24

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Solution

The fourth proportional to 27,639.30, 38,112.12 and 18,671.24 is: 25,745.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,639.30 : 38,112.12 = 18,671.24 : x
  2. Step 2: Convert to fraction form
    27,639.30/38,112.12 = 18,671.24/x
  3. Step 3: Cross multiply
    27,639.30x = 38,112.12 × 18,671.24
  4. Step 4: Simplify right side
    27,639.30x = 711,600,539.43
  5. Step 5: Solve for x
    x = 711,600,539.43/27,639.30
  6. Step 6: Final answer
    x = 25,745.97

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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.