Home / 13,161.80-19,733.10-5,366.60

Finding the Fourth Proportional to 13,161.80, 19,733.10 and 5,366.60

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Solution

The fourth proportional to 13,161.80, 19,733.10 and 5,366.60 is: 8,045.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.80 : 19,733.10 = 5,366.60 : x
  2. Step 2: Convert to fraction form
    13,161.80/19,733.10 = 5,366.60/x
  3. Step 3: Cross multiply
    13,161.80x = 19,733.10 × 5,366.60
  4. Step 4: Simplify right side
    13,161.80x = 105,899,654.46
  5. Step 5: Solve for x
    x = 105,899,654.46/13,161.80
  6. Step 6: Final answer
    x = 8,045.99

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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.