Home / 21,330.43-31,974.99-11,974.93

Finding the Fourth Proportional to 21,330.43, 31,974.99 and 11,974.93

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Solution

The fourth proportional to 21,330.43, 31,974.99 and 11,974.93 is: 17,950.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.43 : 31,974.99 = 11,974.93 : x
  2. Step 2: Convert to fraction form
    21,330.43/31,974.99 = 11,974.93/x
  3. Step 3: Cross multiply
    21,330.43x = 31,974.99 × 11,974.93
  4. Step 4: Simplify right side
    21,330.43x = 382,898,267.00
  5. Step 5: Solve for x
    x = 382,898,267.00/21,330.43
  6. Step 6: Final answer
    x = 17,950.80

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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.