Home / 18,237.54-25,143.43-13,680.85

Finding the Fourth Proportional to 18,237.54, 25,143.43 and 13,680.85

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Solution

The fourth proportional to 18,237.54, 25,143.43 and 13,680.85 is: 18,861.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,237.54 : 25,143.43 = 13,680.85 : x
  2. Step 2: Convert to fraction form
    18,237.54/25,143.43 = 13,680.85/x
  3. Step 3: Cross multiply
    18,237.54x = 25,143.43 × 13,680.85
  4. Step 4: Simplify right side
    18,237.54x = 343,983,494.32
  5. Step 5: Solve for x
    x = 343,983,494.32/18,237.54
  6. Step 6: Final answer
    x = 18,861.29

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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.