Home / 13,084.08-18,055.31-7,115.73

Finding the Fourth Proportional to 13,084.08, 18,055.31 and 7,115.73

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Solution

The fourth proportional to 13,084.08, 18,055.31 and 7,115.73 is: 9,819.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,084.08 : 18,055.31 = 7,115.73 : x
  2. Step 2: Convert to fraction form
    13,084.08/18,055.31 = 7,115.73/x
  3. Step 3: Cross multiply
    13,084.08x = 18,055.31 × 7,115.73
  4. Step 4: Simplify right side
    13,084.08x = 128,476,675.45
  5. Step 5: Solve for x
    x = 128,476,675.45/13,084.08
  6. Step 6: Final answer
    x = 9,819.31

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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.