Home / 21,381.50-29,505.92-11,950.14

Finding the Fourth Proportional to 21,381.50, 29,505.92 and 11,950.14

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Solution

The fourth proportional to 21,381.50, 29,505.92 and 11,950.14 is: 16,490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.50 : 29,505.92 = 11,950.14 : x
  2. Step 2: Convert to fraction form
    21,381.50/29,505.92 = 11,950.14/x
  3. Step 3: Cross multiply
    21,381.50x = 29,505.92 × 11,950.14
  4. Step 4: Simplify right side
    21,381.50x = 352,599,874.83
  5. Step 5: Solve for x
    x = 352,599,874.83/21,381.50
  6. Step 6: Final answer
    x = 16,490.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.