Home / 12,712.65-19,061.25-5,691.36

Finding the Fourth Proportional to 12,712.65, 19,061.25 and 5,691.36

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Solution

The fourth proportional to 12,712.65, 19,061.25 and 5,691.36 is: 8,533.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.65 : 19,061.25 = 5,691.36 : x
  2. Step 2: Convert to fraction form
    12,712.65/19,061.25 = 5,691.36/x
  3. Step 3: Cross multiply
    12,712.65x = 19,061.25 × 5,691.36
  4. Step 4: Simplify right side
    12,712.65x = 108,484,435.80
  5. Step 5: Solve for x
    x = 108,484,435.80/12,712.65
  6. Step 6: Final answer
    x = 8,533.58

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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.