Home / 13,738.49-18,959.55-7,770.04

Finding the Fourth Proportional to 13,738.49, 18,959.55 and 7,770.04

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Solution

The fourth proportional to 13,738.49, 18,959.55 and 7,770.04 is: 10,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.49 : 18,959.55 = 7,770.04 : x
  2. Step 2: Convert to fraction form
    13,738.49/18,959.55 = 7,770.04/x
  3. Step 3: Cross multiply
    13,738.49x = 18,959.55 × 7,770.04
  4. Step 4: Simplify right side
    13,738.49x = 147,316,535.70
  5. Step 5: Solve for x
    x = 147,316,535.70/13,738.49
  6. Step 6: Final answer
    x = 10,722.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.