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Finding the Fourth Proportional to 14,968.80, 22,420.80 and 9,136.80

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Solution

The fourth proportional to 14,968.80, 22,420.80 and 9,136.80 is: 13,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,968.80 : 22,420.80 = 9,136.80 : x
  2. Step 2: Convert to fraction form
    14,968.80/22,420.80 = 9,136.80/x
  3. Step 3: Cross multiply
    14,968.80x = 22,420.80 × 9,136.80
  4. Step 4: Simplify right side
    14,968.80x = 204,854,365.44
  5. Step 5: Solve for x
    x = 204,854,365.44/14,968.80
  6. Step 6: Final answer
    x = 13,685.42

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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.