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Finding the Fourth Proportional to 11,689.32, 17,542.32 and 8,775.48

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Solution

The fourth proportional to 11,689.32, 17,542.32 and 8,775.48 is: 13,169.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.32 : 17,542.32 = 8,775.48 : x
  2. Step 2: Convert to fraction form
    11,689.32/17,542.32 = 8,775.48/x
  3. Step 3: Cross multiply
    11,689.32x = 17,542.32 × 8,775.48
  4. Step 4: Simplify right side
    11,689.32x = 153,942,278.31
  5. Step 5: Solve for x
    x = 153,942,278.31/11,689.32
  6. Step 6: Final answer
    x = 13,169.48

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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.