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Finding the Fourth Proportional to 12,995.28, 17,934.55 and 7,329.74

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Solution

The fourth proportional to 12,995.28, 17,934.55 and 7,329.74 is: 10,115.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995.28 : 17,934.55 = 7,329.74 : x
  2. Step 2: Convert to fraction form
    12,995.28/17,934.55 = 7,329.74/x
  3. Step 3: Cross multiply
    12,995.28x = 17,934.55 × 7,329.74
  4. Step 4: Simplify right side
    12,995.28x = 131,455,480.52
  5. Step 5: Solve for x
    x = 131,455,480.52/12,995.28
  6. Step 6: Final answer
    x = 10,115.63

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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.