Home / 14,287.05-19,715.13-8,318.43

Finding the Fourth Proportional to 14,287.05, 19,715.13 and 8,318.43

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Solution

The fourth proportional to 14,287.05, 19,715.13 and 8,318.43 is: 11,478.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,287.05 : 19,715.13 = 8,318.43 : x
  2. Step 2: Convert to fraction form
    14,287.05/19,715.13 = 8,318.43/x
  3. Step 3: Cross multiply
    14,287.05x = 19,715.13 × 8,318.43
  4. Step 4: Simplify right side
    14,287.05x = 163,998,928.85
  5. Step 5: Solve for x
    x = 163,998,928.85/14,287.05
  6. Step 6: Final answer
    x = 11,478.85

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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.