Home / 12,886.32-17,791.66-9,896.80

Finding the Fourth Proportional to 12,886.32, 17,791.66 and 9,896.80

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Solution

The fourth proportional to 12,886.32, 17,791.66 and 9,896.80 is: 13,664.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.32 : 17,791.66 = 9,896.80 : x
  2. Step 2: Convert to fraction form
    12,886.32/17,791.66 = 9,896.80/x
  3. Step 3: Cross multiply
    12,886.32x = 17,791.66 × 9,896.80
  4. Step 4: Simplify right side
    12,886.32x = 176,080,500.69
  5. Step 5: Solve for x
    x = 176,080,500.69/12,886.32
  6. Step 6: Final answer
    x = 13,664.14

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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.