Home / 10,940.08-16,407.72-3,147.20

Finding the Fourth Proportional to 10,940.08, 16,407.72 and 3,147.20

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Solution

The fourth proportional to 10,940.08, 16,407.72 and 3,147.20 is: 4,720.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,940.08 : 16,407.72 = 3,147.20 : x
  2. Step 2: Convert to fraction form
    10,940.08/16,407.72 = 3,147.20/x
  3. Step 3: Cross multiply
    10,940.08x = 16,407.72 × 3,147.20
  4. Step 4: Simplify right side
    10,940.08x = 51,638,376.38
  5. Step 5: Solve for x
    x = 51,638,376.38/10,940.08
  6. Step 6: Final answer
    x = 4,720.11

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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.