Home / 13,069.20-19,608.60-5,278.80

Finding the Fourth Proportional to 13,069.20, 19,608.60 and 5,278.80

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Solution

The fourth proportional to 13,069.20, 19,608.60 and 5,278.80 is: 7,920.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,069.20 : 19,608.60 = 5,278.80 : x
  2. Step 2: Convert to fraction form
    13,069.20/19,608.60 = 5,278.80/x
  3. Step 3: Cross multiply
    13,069.20x = 19,608.60 × 5,278.80
  4. Step 4: Simplify right side
    13,069.20x = 103,509,877.68
  5. Step 5: Solve for x
    x = 103,509,877.68/13,069.20
  6. Step 6: Final answer
    x = 7,920.14

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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.