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Finding the Fourth Proportional to 21,927.30, 32,891.25 and 7,136.28

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Solution

The fourth proportional to 21,927.30, 32,891.25 and 7,136.28 is: 10,704.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,927.30 : 32,891.25 = 7,136.28 : x
  2. Step 2: Convert to fraction form
    21,927.30/32,891.25 = 7,136.28/x
  3. Step 3: Cross multiply
    21,927.30x = 32,891.25 × 7,136.28
  4. Step 4: Simplify right side
    21,927.30x = 234,721,169.55
  5. Step 5: Solve for x
    x = 234,721,169.55/21,927.30
  6. Step 6: Final answer
    x = 10,704.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.