Home / 12,611.04-17,383.68-7,886.88

Finding the Fourth Proportional to 12,611.04, 17,383.68 and 7,886.88

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Solution

The fourth proportional to 12,611.04, 17,383.68 and 7,886.88 is: 10,871.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.04 : 17,383.68 = 7,886.88 : x
  2. Step 2: Convert to fraction form
    12,611.04/17,383.68 = 7,886.88/x
  3. Step 3: Cross multiply
    12,611.04x = 17,383.68 × 7,886.88
  4. Step 4: Simplify right side
    12,611.04x = 137,102,998.12
  5. Step 5: Solve for x
    x = 137,102,998.12/12,611.04
  6. Step 6: Final answer
    x = 10,871.66

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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.