Home / 21,301.18-31,965.99-7,450.18

Finding the Fourth Proportional to 21,301.18, 31,965.99 and 7,450.18

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Solution

The fourth proportional to 21,301.18, 31,965.99 and 7,450.18 is: 11,180.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.18 : 31,965.99 = 7,450.18 : x
  2. Step 2: Convert to fraction form
    21,301.18/31,965.99 = 7,450.18/x
  3. Step 3: Cross multiply
    21,301.18x = 31,965.99 × 7,450.18
  4. Step 4: Simplify right side
    21,301.18x = 238,152,379.38
  5. Step 5: Solve for x
    x = 238,152,379.38/21,301.18
  6. Step 6: Final answer
    x = 11,180.24

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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.