Home / 18,589.96-25,658.10-11,142.28

Finding the Fourth Proportional to 18,589.96, 25,658.10 and 11,142.28

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Solution

The fourth proportional to 18,589.96, 25,658.10 and 11,142.28 is: 15,378.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.96 : 25,658.10 = 11,142.28 : x
  2. Step 2: Convert to fraction form
    18,589.96/25,658.10 = 11,142.28/x
  3. Step 3: Cross multiply
    18,589.96x = 25,658.10 × 11,142.28
  4. Step 4: Simplify right side
    18,589.96x = 285,889,734.47
  5. Step 5: Solve for x
    x = 285,889,734.47/18,589.96
  6. Step 6: Final answer
    x = 15,378.72

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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.