Home / 18,399.44-25,325.16-15,381.92

Finding the Fourth Proportional to 18,399.44, 25,325.16 and 15,381.92

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Solution

The fourth proportional to 18,399.44, 25,325.16 and 15,381.92 is: 21,171.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399.44 : 25,325.16 = 15,381.92 : x
  2. Step 2: Convert to fraction form
    18,399.44/25,325.16 = 15,381.92/x
  3. Step 3: Cross multiply
    18,399.44x = 25,325.16 × 15,381.92
  4. Step 4: Simplify right side
    18,399.44x = 389,549,585.11
  5. Step 5: Solve for x
    x = 389,549,585.11/18,399.44
  6. Step 6: Final answer
    x = 21,171.82

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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.