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Finding the Fourth Proportional to 9,019.20, 13,510.80 and 7,936.80

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Solution

The fourth proportional to 9,019.20, 13,510.80 and 7,936.80 is: 11,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,019.20 : 13,510.80 = 7,936.80 : x
  2. Step 2: Convert to fraction form
    9,019.20/13,510.80 = 7,936.80/x
  3. Step 3: Cross multiply
    9,019.20x = 13,510.80 × 7,936.80
  4. Step 4: Simplify right side
    9,019.20x = 107,232,517.44
  5. Step 5: Solve for x
    x = 107,232,517.44/9,019.20
  6. Step 6: Final answer
    x = 11,889.36

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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.