Home / 28,227.40-38,935.92-18,138.48

Finding the Fourth Proportional to 28,227.40, 38,935.92 and 18,138.48

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Solution

The fourth proportional to 28,227.40, 38,935.92 and 18,138.48 is: 25,019.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,227.40 : 38,935.92 = 18,138.48 : x
  2. Step 2: Convert to fraction form
    28,227.40/38,935.92 = 18,138.48/x
  3. Step 3: Cross multiply
    28,227.40x = 38,935.92 × 18,138.48
  4. Step 4: Simplify right side
    28,227.40x = 706,238,406.20
  5. Step 5: Solve for x
    x = 706,238,406.20/28,227.40
  6. Step 6: Final answer
    x = 25,019.61

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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.