Home / 13,634.28-18,813.96-7,665.48

Finding the Fourth Proportional to 13,634.28, 18,813.96 and 7,665.48

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Solution

The fourth proportional to 13,634.28, 18,813.96 and 7,665.48 is: 10,577.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.28 : 18,813.96 = 7,665.48 : x
  2. Step 2: Convert to fraction form
    13,634.28/18,813.96 = 7,665.48/x
  3. Step 3: Cross multiply
    13,634.28x = 18,813.96 × 7,665.48
  4. Step 4: Simplify right side
    13,634.28x = 144,218,034.10
  5. Step 5: Solve for x
    x = 144,218,034.10/13,634.28
  6. Step 6: Final answer
    x = 10,577.61

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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.