Home / 13,633.11-18,813.18-7,665.33

Finding the Fourth Proportional to 13,633.11, 18,813.18 and 7,665.33

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Solution

The fourth proportional to 13,633.11, 18,813.18 and 7,665.33 is: 10,577.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.11 : 18,813.18 = 7,665.33 : x
  2. Step 2: Convert to fraction form
    13,633.11/18,813.18 = 7,665.33/x
  3. Step 3: Cross multiply
    13,633.11x = 18,813.18 × 7,665.33
  4. Step 4: Simplify right side
    13,633.11x = 144,209,233.05
  5. Step 5: Solve for x
    x = 144,209,233.05/13,633.11
  6. Step 6: Final answer
    x = 10,577.87

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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.