Home / 28,223.39-38,930.42-18,134.48

Finding the Fourth Proportional to 28,223.39, 38,930.42 and 18,134.48

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Solution

The fourth proportional to 28,223.39, 38,930.42 and 18,134.48 is: 25,014.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.39 : 38,930.42 = 18,134.48 : x
  2. Step 2: Convert to fraction form
    28,223.39/38,930.42 = 18,134.48/x
  3. Step 3: Cross multiply
    28,223.39x = 38,930.42 × 18,134.48
  4. Step 4: Simplify right side
    28,223.39x = 705,983,065.54
  5. Step 5: Solve for x
    x = 705,983,065.54/28,223.39
  6. Step 6: Final answer
    x = 25,014.12

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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.