Home / 12,815.27-17,685.08-7,226.27

Finding the Fourth Proportional to 12,815.27, 17,685.08 and 7,226.27

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Solution

The fourth proportional to 12,815.27, 17,685.08 and 7,226.27 is: 9,972.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.27 : 17,685.08 = 7,226.27 : x
  2. Step 2: Convert to fraction form
    12,815.27/17,685.08 = 7,226.27/x
  3. Step 3: Cross multiply
    12,815.27x = 17,685.08 × 7,226.27
  4. Step 4: Simplify right side
    12,815.27x = 127,797,126.92
  5. Step 5: Solve for x
    x = 127,797,126.92/12,815.27
  6. Step 6: Final answer
    x = 9,972.25

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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.