Home / 13,118.43-18,103.53-7,150.08

Finding the Fourth Proportional to 13,118.43, 18,103.53 and 7,150.08

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Solution

The fourth proportional to 13,118.43, 18,103.53 and 7,150.08 is: 9,867.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.43 : 18,103.53 = 7,150.08 : x
  2. Step 2: Convert to fraction form
    13,118.43/18,103.53 = 7,150.08/x
  3. Step 3: Cross multiply
    13,118.43x = 18,103.53 × 7,150.08
  4. Step 4: Simplify right side
    13,118.43x = 129,441,687.78
  5. Step 5: Solve for x
    x = 129,441,687.78/13,118.43
  6. Step 6: Final answer
    x = 9,867.16

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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.