Home / 12,910.12-17,816.68-7,246.66

Finding the Fourth Proportional to 12,910.12, 17,816.68 and 7,246.66

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Solution

The fourth proportional to 12,910.12, 17,816.68 and 7,246.66 is: 10,000.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.12 : 17,816.68 = 7,246.66 : x
  2. Step 2: Convert to fraction form
    12,910.12/17,816.68 = 7,246.66/x
  3. Step 3: Cross multiply
    12,910.12x = 17,816.68 × 7,246.66
  4. Step 4: Simplify right side
    12,910.12x = 129,111,422.29
  5. Step 5: Solve for x
    x = 129,111,422.29/12,910.12
  6. Step 6: Final answer
    x = 10,000.79

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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.