Home / 11,431.78-17,148.80-4,314.22

Finding the Fourth Proportional to 11,431.78, 17,148.80 and 4,314.22

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Solution

The fourth proportional to 11,431.78, 17,148.80 and 4,314.22 is: 6,471.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.78 : 17,148.80 = 4,314.22 : x
  2. Step 2: Convert to fraction form
    11,431.78/17,148.80 = 4,314.22/x
  3. Step 3: Cross multiply
    11,431.78x = 17,148.80 × 4,314.22
  4. Step 4: Simplify right side
    11,431.78x = 73,983,695.94
  5. Step 5: Solve for x
    x = 73,983,695.94/11,431.78
  6. Step 6: Final answer
    x = 6,471.76

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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.