Home / 28,143.55-38,843.31-18,084.57

Finding the Fourth Proportional to 28,143.55, 38,843.31 and 18,084.57

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Solution

The fourth proportional to 28,143.55, 38,843.31 and 18,084.57 is: 24,960.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.55 : 38,843.31 = 18,084.57 : x
  2. Step 2: Convert to fraction form
    28,143.55/38,843.31 = 18,084.57/x
  3. Step 3: Cross multiply
    28,143.55x = 38,843.31 × 18,084.57
  4. Step 4: Simplify right side
    28,143.55x = 702,464,480.88
  5. Step 5: Solve for x
    x = 702,464,480.88/28,143.55
  6. Step 6: Final answer
    x = 24,960.05

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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.