Home / 21,381.27-29,503.59-11,819.87

Finding the Fourth Proportional to 21,381.27, 29,503.59 and 11,819.87

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Solution

The fourth proportional to 21,381.27, 29,503.59 and 11,819.87 is: 16,310.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.27 : 29,503.59 = 11,819.87 : x
  2. Step 2: Convert to fraction form
    21,381.27/29,503.59 = 11,819.87/x
  3. Step 3: Cross multiply
    21,381.27x = 29,503.59 × 11,819.87
  4. Step 4: Simplify right side
    21,381.27x = 348,728,598.33
  5. Step 5: Solve for x
    x = 348,728,598.33/21,381.27
  6. Step 6: Final answer
    x = 16,310.00

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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.