Home / 12,658.64-17,476.38-8,685.59

Finding the Fourth Proportional to 12,658.64, 17,476.38 and 8,685.59

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Solution

The fourth proportional to 12,658.64, 17,476.38 and 8,685.59 is: 11,991.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.64 : 17,476.38 = 8,685.59 : x
  2. Step 2: Convert to fraction form
    12,658.64/17,476.38 = 8,685.59/x
  3. Step 3: Cross multiply
    12,658.64x = 17,476.38 × 8,685.59
  4. Step 4: Simplify right side
    12,658.64x = 151,792,671.36
  5. Step 5: Solve for x
    x = 151,792,671.36/12,658.64
  6. Step 6: Final answer
    x = 11,991.23

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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.