Home / 18,397.44-25,322.40-15,379.92

Finding the Fourth Proportional to 18,397.44, 25,322.40 and 15,379.92

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Solution

The fourth proportional to 18,397.44, 25,322.40 and 15,379.92 is: 21,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,397.44 : 25,322.40 = 15,379.92 : x
  2. Step 2: Convert to fraction form
    18,397.44/25,322.40 = 15,379.92/x
  3. Step 3: Cross multiply
    18,397.44x = 25,322.40 × 15,379.92
  4. Step 4: Simplify right side
    18,397.44x = 389,456,486.21
  5. Step 5: Solve for x
    x = 389,456,486.21/18,397.44
  6. Step 6: Final answer
    x = 21,169.06

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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.