Home / 13,645.43-20,468.07-11,790.90

Finding the Fourth Proportional to 13,645.43, 20,468.07 and 11,790.90

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Solution

The fourth proportional to 13,645.43, 20,468.07 and 11,790.90 is: 17,686.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.43 : 20,468.07 = 11,790.90 : x
  2. Step 2: Convert to fraction form
    13,645.43/20,468.07 = 11,790.90/x
  3. Step 3: Cross multiply
    13,645.43x = 20,468.07 × 11,790.90
  4. Step 4: Simplify right side
    13,645.43x = 241,336,966.56
  5. Step 5: Solve for x
    x = 241,336,966.56/13,645.43
  6. Step 6: Final answer
    x = 17,686.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.