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Finding the Fourth Proportional to 12,694.99, 17,518.71 and 7,029.54

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Solution

The fourth proportional to 12,694.99, 17,518.71 and 7,029.54 is: 9,700.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,694.99 : 17,518.71 = 7,029.54 : x
  2. Step 2: Convert to fraction form
    12,694.99/17,518.71 = 7,029.54/x
  3. Step 3: Cross multiply
    12,694.99x = 17,518.71 × 7,029.54
  4. Step 4: Simplify right side
    12,694.99x = 123,148,385.10
  5. Step 5: Solve for x
    x = 123,148,385.10/12,694.99
  6. Step 6: Final answer
    x = 9,700.55

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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.