Home / 21,300.62-29,395.67-11,869.79

Finding the Fourth Proportional to 21,300.62, 29,395.67 and 11,869.79

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Solution

The fourth proportional to 21,300.62, 29,395.67 and 11,869.79 is: 16,380.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.62 : 29,395.67 = 11,869.79 : x
  2. Step 2: Convert to fraction form
    21,300.62/29,395.67 = 11,869.79/x
  3. Step 3: Cross multiply
    21,300.62x = 29,395.67 × 11,869.79
  4. Step 4: Simplify right side
    21,300.62x = 348,920,223.48
  5. Step 5: Solve for x
    x = 348,920,223.48/21,300.62
  6. Step 6: Final answer
    x = 16,380.76

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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.