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Finding the Fourth Proportional to 12,959.35, 17,886.35 and 8,116.33

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Solution

The fourth proportional to 12,959.35, 17,886.35 and 8,116.33 is: 11,202.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,959.35 : 17,886.35 = 8,116.33 : x
  2. Step 2: Convert to fraction form
    12,959.35/17,886.35 = 8,116.33/x
  3. Step 3: Cross multiply
    12,959.35x = 17,886.35 × 8,116.33
  4. Step 4: Simplify right side
    12,959.35x = 145,171,519.10
  5. Step 5: Solve for x
    x = 145,171,519.10/12,959.35
  6. Step 6: Final answer
    x = 11,202.07

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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.