Home / 13,150.58-18,147.10-7,181.09

Finding the Fourth Proportional to 13,150.58, 18,147.10 and 7,181.09

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Solution

The fourth proportional to 13,150.58, 18,147.10 and 7,181.09 is: 9,909.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150.58 : 18,147.10 = 7,181.09 : x
  2. Step 2: Convert to fraction form
    13,150.58/18,147.10 = 7,181.09/x
  3. Step 3: Cross multiply
    13,150.58x = 18,147.10 × 7,181.09
  4. Step 4: Simplify right side
    13,150.58x = 130,315,831.70
  5. Step 5: Solve for x
    x = 130,315,831.70/13,150.58
  6. Step 6: Final answer
    x = 9,909.51

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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.