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Finding the Fourth Proportional to 10,614.78, 15,916.07 and 4,379.09

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Solution

The fourth proportional to 10,614.78, 15,916.07 and 4,379.09 is: 6,566.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,614.78 : 15,916.07 = 4,379.09 : x
  2. Step 2: Convert to fraction form
    10,614.78/15,916.07 = 4,379.09/x
  3. Step 3: Cross multiply
    10,614.78x = 15,916.07 × 4,379.09
  4. Step 4: Simplify right side
    10,614.78x = 69,697,834.34
  5. Step 5: Solve for x
    x = 69,697,834.34/10,614.78
  6. Step 6: Final answer
    x = 6,566.11

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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.