Home / 20,979.96-31,469.94-14,386.14

Finding the Fourth Proportional to 20,979.96, 31,469.94 and 14,386.14

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Solution

The fourth proportional to 20,979.96, 31,469.94 and 14,386.14 is: 21,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979.96 : 31,469.94 = 14,386.14 : x
  2. Step 2: Convert to fraction form
    20,979.96/31,469.94 = 14,386.14/x
  3. Step 3: Cross multiply
    20,979.96x = 31,469.94 × 14,386.14
  4. Step 4: Simplify right side
    20,979.96x = 452,730,962.63
  5. Step 5: Solve for x
    x = 452,730,962.63/20,979.96
  6. Step 6: Final answer
    x = 21,579.21

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Similar ratio
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1.5x scale

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.