Home / 18,418.31-25,432.26-15,015.86

Finding the Fourth Proportional to 18,418.31, 25,432.26 and 15,015.86

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Solution

The fourth proportional to 18,418.31, 25,432.26 and 15,015.86 is: 20,734.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.31 : 25,432.26 = 15,015.86 : x
  2. Step 2: Convert to fraction form
    18,418.31/25,432.26 = 15,015.86/x
  3. Step 3: Cross multiply
    18,418.31x = 25,432.26 × 15,015.86
  4. Step 4: Simplify right side
    18,418.31x = 381,887,255.64
  5. Step 5: Solve for x
    x = 381,887,255.64/18,418.31
  6. Step 6: Final answer
    x = 20,734.11

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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.