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Finding the Fourth Proportional to 13,170.15, 19,745.91 and 6,591.60

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Solution

The fourth proportional to 13,170.15, 19,745.91 and 6,591.60 is: 9,882.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.15 : 19,745.91 = 6,591.60 : x
  2. Step 2: Convert to fraction form
    13,170.15/19,745.91 = 6,591.60/x
  3. Step 3: Cross multiply
    13,170.15x = 19,745.91 × 6,591.60
  4. Step 4: Simplify right side
    13,170.15x = 130,157,140.36
  5. Step 5: Solve for x
    x = 130,157,140.36/13,170.15
  6. Step 6: Final answer
    x = 9,882.74

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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.