Home / 13,149.59-18,146.34-7,181.26

Finding the Fourth Proportional to 13,149.59, 18,146.34 and 7,181.26

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Solution

The fourth proportional to 13,149.59, 18,146.34 and 7,181.26 is: 9,910.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.59 : 18,146.34 = 7,181.26 : x
  2. Step 2: Convert to fraction form
    13,149.59/18,146.34 = 7,181.26/x
  3. Step 3: Cross multiply
    13,149.59x = 18,146.34 × 7,181.26
  4. Step 4: Simplify right side
    13,149.59x = 130,313,458.95
  5. Step 5: Solve for x
    x = 130,313,458.95/13,149.59
  6. Step 6: Final answer
    x = 9,910.08

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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.