Home / 12,903-19,338.30-6,979.65

Finding the Fourth Proportional to 12,903, 19,338.30 and 6,979.65

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Solution

The fourth proportional to 12,903, 19,338.30 and 6,979.65 is: 10,460.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903 : 19,338.30 = 6,979.65 : x
  2. Step 2: Convert to fraction form
    12,903/19,338.30 = 6,979.65/x
  3. Step 3: Cross multiply
    12,903x = 19,338.30 × 6,979.65
  4. Step 4: Simplify right side
    12,903x = 134,974,565.60
  5. Step 5: Solve for x
    x = 134,974,565.60/12,903
  6. Step 6: Final answer
    x = 10,460.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.