Home / 13,132.16-18,122.22-7,163.88

Finding the Fourth Proportional to 13,132.16, 18,122.22 and 7,163.88

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Solution

The fourth proportional to 13,132.16, 18,122.22 and 7,163.88 is: 9,886.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.16 : 18,122.22 = 7,163.88 : x
  2. Step 2: Convert to fraction form
    13,132.16/18,122.22 = 7,163.88/x
  3. Step 3: Cross multiply
    13,132.16x = 18,122.22 × 7,163.88
  4. Step 4: Simplify right side
    13,132.16x = 129,825,409.41
  5. Step 5: Solve for x
    x = 129,825,409.41/13,132.16
  6. Step 6: Final answer
    x = 9,886.07

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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.