Home / 13,118.51-18,103.92-7,150.56

Finding the Fourth Proportional to 13,118.51, 18,103.92 and 7,150.56

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Solution

The fourth proportional to 13,118.51, 18,103.92 and 7,150.56 is: 9,867.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.51 : 18,103.92 = 7,150.56 : x
  2. Step 2: Convert to fraction form
    13,118.51/18,103.92 = 7,150.56/x
  3. Step 3: Cross multiply
    13,118.51x = 18,103.92 × 7,150.56
  4. Step 4: Simplify right side
    13,118.51x = 129,453,166.20
  5. Step 5: Solve for x
    x = 129,453,166.20/13,118.51
  6. Step 6: Final answer
    x = 9,867.98

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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.