Home / 20,983.82-31,486.28-13,084.29

Finding the Fourth Proportional to 20,983.82, 31,486.28 and 13,084.29

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Solution

The fourth proportional to 20,983.82, 31,486.28 and 13,084.29 is: 19,633.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.82 : 31,486.28 = 13,084.29 : x
  2. Step 2: Convert to fraction form
    20,983.82/31,486.28 = 13,084.29/x
  3. Step 3: Cross multiply
    20,983.82x = 31,486.28 × 13,084.29
  4. Step 4: Simplify right side
    20,983.82x = 411,975,553.12
  5. Step 5: Solve for x
    x = 411,975,553.12/20,983.82
  6. Step 6: Final answer
    x = 19,633.01

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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.