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Finding the Fourth Proportional to 15,145.75, 22,718.83 and 4,757.50

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Solution

The fourth proportional to 15,145.75, 22,718.83 and 4,757.50 is: 7,136.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.75 : 22,718.83 = 4,757.50 : x
  2. Step 2: Convert to fraction form
    15,145.75/22,718.83 = 4,757.50/x
  3. Step 3: Cross multiply
    15,145.75x = 22,718.83 × 4,757.50
  4. Step 4: Simplify right side
    15,145.75x = 108,084,833.73
  5. Step 5: Solve for x
    x = 108,084,833.73/15,145.75
  6. Step 6: Final answer
    x = 7,136.31

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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.