Home / 13,132.23-18,122.23-7,163.74

Finding the Fourth Proportional to 13,132.23, 18,122.23 and 7,163.74

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Solution

The fourth proportional to 13,132.23, 18,122.23 and 7,163.74 is: 9,885.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.23 : 18,122.23 = 7,163.74 : x
  2. Step 2: Convert to fraction form
    13,132.23/18,122.23 = 7,163.74/x
  3. Step 3: Cross multiply
    13,132.23x = 18,122.23 × 7,163.74
  4. Step 4: Simplify right side
    13,132.23x = 129,822,975.55
  5. Step 5: Solve for x
    x = 129,822,975.55/13,132.23
  6. Step 6: Final answer
    x = 9,885.83

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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.