Home / 13,253.20-19,912.20-9,972.70

Finding the Fourth Proportional to 13,253.20, 19,912.20 and 9,972.70

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Solution

The fourth proportional to 13,253.20, 19,912.20 and 9,972.70 is: 14,983.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.20 : 19,912.20 = 9,972.70 : x
  2. Step 2: Convert to fraction form
    13,253.20/19,912.20 = 9,972.70/x
  3. Step 3: Cross multiply
    13,253.20x = 19,912.20 × 9,972.70
  4. Step 4: Simplify right side
    13,253.20x = 198,578,396.94
  5. Step 5: Solve for x
    x = 198,578,396.94/13,253.20
  6. Step 6: Final answer
    x = 14,983.43

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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.