Home / 21,217.50-29,281.10-11,786.04

Finding the Fourth Proportional to 21,217.50, 29,281.10 and 11,786.04

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Solution

The fourth proportional to 21,217.50, 29,281.10 and 11,786.04 is: 16,265.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.50 : 29,281.10 = 11,786.04 : x
  2. Step 2: Convert to fraction form
    21,217.50/29,281.10 = 11,786.04/x
  3. Step 3: Cross multiply
    21,217.50x = 29,281.10 × 11,786.04
  4. Step 4: Simplify right side
    21,217.50x = 345,108,156.91
  5. Step 5: Solve for x
    x = 345,108,156.91/21,217.50
  6. Step 6: Final answer
    x = 16,265.26

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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.