Home / 13,443.44-18,553.39-7,778.08

Finding the Fourth Proportional to 13,443.44, 18,553.39 and 7,778.08

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Solution

The fourth proportional to 13,443.44, 18,553.39 and 7,778.08 is: 10,734.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.44 : 18,553.39 = 7,778.08 : x
  2. Step 2: Convert to fraction form
    13,443.44/18,553.39 = 7,778.08/x
  3. Step 3: Cross multiply
    13,443.44x = 18,553.39 × 7,778.08
  4. Step 4: Simplify right side
    13,443.44x = 144,309,751.69
  5. Step 5: Solve for x
    x = 144,309,751.69/13,443.44
  6. Step 6: Final answer
    x = 10,734.59

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1.5x scale

Why These Related Problems?

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