Home / 19,176.78-28,769.10-7,329.72

Finding the Fourth Proportional to 19,176.78, 28,769.10 and 7,329.72

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Solution

The fourth proportional to 19,176.78, 28,769.10 and 7,329.72 is: 10,996.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176.78 : 28,769.10 = 7,329.72 : x
  2. Step 2: Convert to fraction form
    19,176.78/28,769.10 = 7,329.72/x
  3. Step 3: Cross multiply
    19,176.78x = 28,769.10 × 7,329.72
  4. Step 4: Simplify right side
    19,176.78x = 210,869,447.65
  5. Step 5: Solve for x
    x = 210,869,447.65/19,176.78
  6. Step 6: Final answer
    x = 10,996.08

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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.