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Finding the Fourth Proportional to 12,995.66, 17,914.84 and 9,207.11

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Solution

The fourth proportional to 12,995.66, 17,914.84 and 9,207.11 is: 12,692.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995.66 : 17,914.84 = 9,207.11 : x
  2. Step 2: Convert to fraction form
    12,995.66/17,914.84 = 9,207.11/x
  3. Step 3: Cross multiply
    12,995.66x = 17,914.84 × 9,207.11
  4. Step 4: Simplify right side
    12,995.66x = 164,943,789.92
  5. Step 5: Solve for x
    x = 164,943,789.92/12,995.66
  6. Step 6: Final answer
    x = 12,692.23

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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.