Home / 13,083.68-18,055.61-7,115.48

Finding the Fourth Proportional to 13,083.68, 18,055.61 and 7,115.48

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Solution

The fourth proportional to 13,083.68, 18,055.61 and 7,115.48 is: 9,819.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,083.68 : 18,055.61 = 7,115.48 : x
  2. Step 2: Convert to fraction form
    13,083.68/18,055.61 = 7,115.48/x
  3. Step 3: Cross multiply
    13,083.68x = 18,055.61 × 7,115.48
  4. Step 4: Simplify right side
    13,083.68x = 128,474,376.98
  5. Step 5: Solve for x
    x = 128,474,376.98/13,083.68
  6. Step 6: Final answer
    x = 9,819.44

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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.