Home / 21,136.20-29,167.46-11,705.16

Finding the Fourth Proportional to 21,136.20, 29,167.46 and 11,705.16

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Solution

The fourth proportional to 21,136.20, 29,167.46 and 11,705.16 is: 16,152.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.20 : 29,167.46 = 11,705.16 : x
  2. Step 2: Convert to fraction form
    21,136.20/29,167.46 = 11,705.16/x
  3. Step 3: Cross multiply
    21,136.20x = 29,167.46 × 11,705.16
  4. Step 4: Simplify right side
    21,136.20x = 341,409,786.09
  5. Step 5: Solve for x
    x = 341,409,786.09/21,136.20
  6. Step 6: Final answer
    x = 16,152.85

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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.