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Finding the Fourth Proportional to 14,820, 22,235.16 and 7,422.80

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Solution

The fourth proportional to 14,820, 22,235.16 and 7,422.80 is: 11,136.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,820 : 22,235.16 = 7,422.80 : x
  2. Step 2: Convert to fraction form
    14,820/22,235.16 = 7,422.80/x
  3. Step 3: Cross multiply
    14,820x = 22,235.16 × 7,422.80
  4. Step 4: Simplify right side
    14,820x = 165,047,145.65
  5. Step 5: Solve for x
    x = 165,047,145.65/14,820
  6. Step 6: Final answer
    x = 11,136.78

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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.