Home / 13,396.11-18,487.94-7,806.75

Finding the Fourth Proportional to 13,396.11, 18,487.94 and 7,806.75

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Solution

The fourth proportional to 13,396.11, 18,487.94 and 7,806.75 is: 10,774.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.11 : 18,487.94 = 7,806.75 : x
  2. Step 2: Convert to fraction form
    13,396.11/18,487.94 = 7,806.75/x
  3. Step 3: Cross multiply
    13,396.11x = 18,487.94 × 7,806.75
  4. Step 4: Simplify right side
    13,396.11x = 144,330,686.56
  5. Step 5: Solve for x
    x = 144,330,686.56/13,396.11
  6. Step 6: Final answer
    x = 10,774.07

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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.