Home / 13,118.39-18,103.40-7,150.07

Finding the Fourth Proportional to 13,118.39, 18,103.40 and 7,150.07

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Solution

The fourth proportional to 13,118.39, 18,103.40 and 7,150.07 is: 9,867.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.39 : 18,103.40 = 7,150.07 : x
  2. Step 2: Convert to fraction form
    13,118.39/18,103.40 = 7,150.07/x
  3. Step 3: Cross multiply
    13,118.39x = 18,103.40 × 7,150.07
  4. Step 4: Simplify right side
    13,118.39x = 129,440,450.97
  5. Step 5: Solve for x
    x = 129,440,450.97/13,118.39
  6. Step 6: Final answer
    x = 9,867.10

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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.