Home / 13,172.20-19,745.70-6,591.76

Finding the Fourth Proportional to 13,172.20, 19,745.70 and 6,591.76

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Solution

The fourth proportional to 13,172.20, 19,745.70 and 6,591.76 is: 9,881.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.20 : 19,745.70 = 6,591.76 : x
  2. Step 2: Convert to fraction form
    13,172.20/19,745.70 = 6,591.76/x
  3. Step 3: Cross multiply
    13,172.20x = 19,745.70 × 6,591.76
  4. Step 4: Simplify right side
    13,172.20x = 130,158,915.43
  5. Step 5: Solve for x
    x = 130,158,915.43/13,172.20
  6. Step 6: Final answer
    x = 9,881.33

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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.