Home / 12,891.36-17,795.52-8,705.28

Finding the Fourth Proportional to 12,891.36, 17,795.52 and 8,705.28

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Solution

The fourth proportional to 12,891.36, 17,795.52 and 8,705.28 is: 12,016.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891.36 : 17,795.52 = 8,705.28 : x
  2. Step 2: Convert to fraction form
    12,891.36/17,795.52 = 8,705.28/x
  3. Step 3: Cross multiply
    12,891.36x = 17,795.52 × 8,705.28
  4. Step 4: Simplify right side
    12,891.36x = 154,914,984.35
  5. Step 5: Solve for x
    x = 154,914,984.35/12,891.36
  6. Step 6: Final answer
    x = 12,016.96

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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.