Home / 21,116.82-31,676.04-9,430.14

Finding the Fourth Proportional to 21,116.82, 31,676.04 and 9,430.14

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Solution

The fourth proportional to 21,116.82, 31,676.04 and 9,430.14 is: 14,145.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.82 : 31,676.04 = 9,430.14 : x
  2. Step 2: Convert to fraction form
    21,116.82/31,676.04 = 9,430.14/x
  3. Step 3: Cross multiply
    21,116.82x = 31,676.04 × 9,430.14
  4. Step 4: Simplify right side
    21,116.82x = 298,709,491.85
  5. Step 5: Solve for x
    x = 298,709,491.85/21,116.82
  6. Step 6: Final answer
    x = 14,145.57

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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.