Home / 13,141.17-18,135.09-8,107.83

Finding the Fourth Proportional to 13,141.17, 18,135.09 and 8,107.83

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Solution

The fourth proportional to 13,141.17, 18,135.09 and 8,107.83 is: 11,188.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.17 : 18,135.09 = 8,107.83 : x
  2. Step 2: Convert to fraction form
    13,141.17/18,135.09 = 8,107.83/x
  3. Step 3: Cross multiply
    13,141.17x = 18,135.09 × 8,107.83
  4. Step 4: Simplify right side
    13,141.17x = 147,036,226.75
  5. Step 5: Solve for x
    x = 147,036,226.75/13,141.17
  6. Step 6: Final answer
    x = 11,188.98

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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.