Home / 10,081.44-15,089.80-5,389.72

Finding the Fourth Proportional to 10,081.44, 15,089.80 and 5,389.72

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Solution

The fourth proportional to 10,081.44, 15,089.80 and 5,389.72 is: 8,067.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.44 : 15,089.80 = 5,389.72 : x
  2. Step 2: Convert to fraction form
    10,081.44/15,089.80 = 5,389.72/x
  3. Step 3: Cross multiply
    10,081.44x = 15,089.80 × 5,389.72
  4. Step 4: Simplify right side
    10,081.44x = 81,329,796.86
  5. Step 5: Solve for x
    x = 81,329,796.86/10,081.44
  6. Step 6: Final answer
    x = 8,067.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.