Home / 13,135.91-19,708.52-8,199.83

Finding the Fourth Proportional to 13,135.91, 19,708.52 and 8,199.83

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Solution

The fourth proportional to 13,135.91, 19,708.52 and 8,199.83 is: 12,302.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.91 : 19,708.52 = 8,199.83 : x
  2. Step 2: Convert to fraction form
    13,135.91/19,708.52 = 8,199.83/x
  3. Step 3: Cross multiply
    13,135.91x = 19,708.52 × 8,199.83
  4. Step 4: Simplify right side
    13,135.91x = 161,606,521.82
  5. Step 5: Solve for x
    x = 161,606,521.82/13,135.91
  6. Step 6: Final answer
    x = 12,302.66

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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.