Home / 13,189.26-18,197.55-7,882.14

Finding the Fourth Proportional to 13,189.26, 18,197.55 and 7,882.14

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Solution

The fourth proportional to 13,189.26, 18,197.55 and 7,882.14 is: 10,875.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.26 : 18,197.55 = 7,882.14 : x
  2. Step 2: Convert to fraction form
    13,189.26/18,197.55 = 7,882.14/x
  3. Step 3: Cross multiply
    13,189.26x = 18,197.55 × 7,882.14
  4. Step 4: Simplify right side
    13,189.26x = 143,435,636.76
  5. Step 5: Solve for x
    x = 143,435,636.76/13,189.26
  6. Step 6: Final answer
    x = 10,875.18

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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.