Home / 21,136.50-29,167.20-11,704.32

Finding the Fourth Proportional to 21,136.50, 29,167.20 and 11,704.32

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Solution

The fourth proportional to 21,136.50, 29,167.20 and 11,704.32 is: 16,151.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.50 : 29,167.20 = 11,704.32 : x
  2. Step 2: Convert to fraction form
    21,136.50/29,167.20 = 11,704.32/x
  3. Step 3: Cross multiply
    21,136.50x = 29,167.20 × 11,704.32
  4. Step 4: Simplify right side
    21,136.50x = 341,382,242.30
  5. Step 5: Solve for x
    x = 341,382,242.30/21,136.50
  6. Step 6: Final answer
    x = 16,151.31

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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.