Home / 13,981.49-20,979.52-5,667.65

Finding the Fourth Proportional to 13,981.49, 20,979.52 and 5,667.65

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Solution

The fourth proportional to 13,981.49, 20,979.52 and 5,667.65 is: 8,504.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.49 : 20,979.52 = 5,667.65 : x
  2. Step 2: Convert to fraction form
    13,981.49/20,979.52 = 5,667.65/x
  3. Step 3: Cross multiply
    13,981.49x = 20,979.52 × 5,667.65
  4. Step 4: Simplify right side
    13,981.49x = 118,904,457.46
  5. Step 5: Solve for x
    x = 118,904,457.46/13,981.49
  6. Step 6: Final answer
    x = 8,504.42

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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.