Home / 12,615.45-17,391.11-8,826.87

Finding the Fourth Proportional to 12,615.45, 17,391.11 and 8,826.87

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Solution

The fourth proportional to 12,615.45, 17,391.11 and 8,826.87 is: 12,168.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.45 : 17,391.11 = 8,826.87 : x
  2. Step 2: Convert to fraction form
    12,615.45/17,391.11 = 8,826.87/x
  3. Step 3: Cross multiply
    12,615.45x = 17,391.11 × 8,826.87
  4. Step 4: Simplify right side
    12,615.45x = 153,509,067.13
  5. Step 5: Solve for x
    x = 153,509,067.13/12,615.45
  6. Step 6: Final answer
    x = 12,168.34

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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.