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Finding the Fourth Proportional to 12,548.99, 17,317.61 and 6,959.99

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Solution

The fourth proportional to 12,548.99, 17,317.61 and 6,959.99 is: 9,604.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,548.99 : 17,317.61 = 6,959.99 : x
  2. Step 2: Convert to fraction form
    12,548.99/17,317.61 = 6,959.99/x
  3. Step 3: Cross multiply
    12,548.99x = 17,317.61 × 6,959.99
  4. Step 4: Simplify right side
    12,548.99x = 120,530,363.75
  5. Step 5: Solve for x
    x = 120,530,363.75/12,548.99
  6. Step 6: Final answer
    x = 9,604.79

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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.