Home / 8,686.47-13,029.71-2,112.66

Finding the Fourth Proportional to 8,686.47, 13,029.71 and 2,112.66

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Solution

The fourth proportional to 8,686.47, 13,029.71 and 2,112.66 is: 3,168.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.47 : 13,029.71 = 2,112.66 : x
  2. Step 2: Convert to fraction form
    8,686.47/13,029.71 = 2,112.66/x
  3. Step 3: Cross multiply
    8,686.47x = 13,029.71 × 2,112.66
  4. Step 4: Simplify right side
    8,686.47x = 27,527,336.57
  5. Step 5: Solve for x
    x = 27,527,336.57/8,686.47
  6. Step 6: Final answer
    x = 3,168.99

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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.