Home / 11,431.10-17,147.88-3,638.10

Finding the Fourth Proportional to 11,431.10, 17,147.88 and 3,638.10

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Solution

The fourth proportional to 11,431.10, 17,147.88 and 3,638.10 is: 5,457.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.10 : 17,147.88 = 3,638.10 : x
  2. Step 2: Convert to fraction form
    11,431.10/17,147.88 = 3,638.10/x
  3. Step 3: Cross multiply
    11,431.10x = 17,147.88 × 3,638.10
  4. Step 4: Simplify right side
    11,431.10x = 62,385,702.23
  5. Step 5: Solve for x
    x = 62,385,702.23/11,431.10
  6. Step 6: Final answer
    x = 5,457.54

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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.