Home / 13,800.66-19,042.38-8,137.19

Finding the Fourth Proportional to 13,800.66, 19,042.38 and 8,137.19

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Solution

The fourth proportional to 13,800.66, 19,042.38 and 8,137.19 is: 11,227.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.66 : 19,042.38 = 8,137.19 : x
  2. Step 2: Convert to fraction form
    13,800.66/19,042.38 = 8,137.19/x
  3. Step 3: Cross multiply
    13,800.66x = 19,042.38 × 8,137.19
  4. Step 4: Simplify right side
    13,800.66x = 154,951,368.90
  5. Step 5: Solve for x
    x = 154,951,368.90/13,800.66
  6. Step 6: Final answer
    x = 11,227.82

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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.