Home / 13,134.91-19,790.11-11,887.18

Finding the Fourth Proportional to 13,134.91, 19,790.11 and 11,887.18

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Solution

The fourth proportional to 13,134.91, 19,790.11 and 11,887.18 is: 17,910.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.91 : 19,790.11 = 11,887.18 : x
  2. Step 2: Convert to fraction form
    13,134.91/19,790.11 = 11,887.18/x
  3. Step 3: Cross multiply
    13,134.91x = 19,790.11 × 11,887.18
  4. Step 4: Simplify right side
    13,134.91x = 235,248,604.12
  5. Step 5: Solve for x
    x = 235,248,604.12/13,134.91
  6. Step 6: Final answer
    x = 17,910.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.