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Finding the Fourth Proportional to 12,952.15, 17,873.95 and 7,286.90

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Solution

The fourth proportional to 12,952.15, 17,873.95 and 7,286.90 is: 10,055.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,952.15 : 17,873.95 = 7,286.90 : x
  2. Step 2: Convert to fraction form
    12,952.15/17,873.95 = 7,286.90/x
  3. Step 3: Cross multiply
    12,952.15x = 17,873.95 × 7,286.90
  4. Step 4: Simplify right side
    12,952.15x = 130,245,743.14
  5. Step 5: Solve for x
    x = 130,245,743.14/12,952.15
  6. Step 6: Final answer
    x = 10,055.91

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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.