Home / 13,150.62-18,147.17-7,181.12

Finding the Fourth Proportional to 13,150.62, 18,147.17 and 7,181.12

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Solution

The fourth proportional to 13,150.62, 18,147.17 and 7,181.12 is: 9,909.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150.62 : 18,147.17 = 7,181.12 : x
  2. Step 2: Convert to fraction form
    13,150.62/18,147.17 = 7,181.12/x
  3. Step 3: Cross multiply
    13,150.62x = 18,147.17 × 7,181.12
  4. Step 4: Simplify right side
    13,150.62x = 130,317,068.75
  5. Step 5: Solve for x
    x = 130,317,068.75/13,150.62
  6. Step 6: Final answer
    x = 9,909.58

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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.