Home / 21,021.14-31,506.19-9,008.44

Finding the Fourth Proportional to 21,021.14, 31,506.19 and 9,008.44

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Solution

The fourth proportional to 21,021.14, 31,506.19 and 9,008.44 is: 13,501.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.14 : 31,506.19 = 9,008.44 : x
  2. Step 2: Convert to fraction form
    21,021.14/31,506.19 = 9,008.44/x
  3. Step 3: Cross multiply
    21,021.14x = 31,506.19 × 9,008.44
  4. Step 4: Simplify right side
    21,021.14x = 283,821,520.96
  5. Step 5: Solve for x
    x = 283,821,520.96/21,021.14
  6. Step 6: Final answer
    x = 13,501.72

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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.