Home / 12,106.10-16,713.42-7,921.64

Finding the Fourth Proportional to 12,106.10, 16,713.42 and 7,921.64

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Solution

The fourth proportional to 12,106.10, 16,713.42 and 7,921.64 is: 10,936.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.10 : 16,713.42 = 7,921.64 : x
  2. Step 2: Convert to fraction form
    12,106.10/16,713.42 = 7,921.64/x
  3. Step 3: Cross multiply
    12,106.10x = 16,713.42 × 7,921.64
  4. Step 4: Simplify right side
    12,106.10x = 132,397,696.41
  5. Step 5: Solve for x
    x = 132,397,696.41/12,106.10
  6. Step 6: Final answer
    x = 10,936.44

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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.