Home / 21,020.94-31,531.35-6,982.05

Finding the Fourth Proportional to 21,020.94, 31,531.35 and 6,982.05

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Solution

The fourth proportional to 21,020.94, 31,531.35 and 6,982.05 is: 10,473.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.94 : 31,531.35 = 6,982.05 : x
  2. Step 2: Convert to fraction form
    21,020.94/31,531.35 = 6,982.05/x
  3. Step 3: Cross multiply
    21,020.94x = 31,531.35 × 6,982.05
  4. Step 4: Simplify right side
    21,020.94x = 220,153,462.27
  5. Step 5: Solve for x
    x = 220,153,462.27/21,020.94
  6. Step 6: Final answer
    x = 10,473.06

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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.