Home / 12,717.91-19,062.12-4,815.40

Finding the Fourth Proportional to 12,717.91, 19,062.12 and 4,815.40

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Solution

The fourth proportional to 12,717.91, 19,062.12 and 4,815.40 is: 7,217.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,717.91 : 19,062.12 = 4,815.40 : x
  2. Step 2: Convert to fraction form
    12,717.91/19,062.12 = 4,815.40/x
  3. Step 3: Cross multiply
    12,717.91x = 19,062.12 × 4,815.40
  4. Step 4: Simplify right side
    12,717.91x = 91,791,732.65
  5. Step 5: Solve for x
    x = 91,791,732.65/12,717.91
  6. Step 6: Final answer
    x = 7,217.52

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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.