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Finding the Fourth Proportional to 15,168.80, 22,728.90 and 9,968.60

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Solution

The fourth proportional to 15,168.80, 22,728.90 and 9,968.60 is: 14,936.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.80 : 22,728.90 = 9,968.60 : x
  2. Step 2: Convert to fraction form
    15,168.80/22,728.90 = 9,968.60/x
  3. Step 3: Cross multiply
    15,168.80x = 22,728.90 × 9,968.60
  4. Step 4: Simplify right side
    15,168.80x = 226,575,312.54
  5. Step 5: Solve for x
    x = 226,575,312.54/15,168.80
  6. Step 6: Final answer
    x = 14,936.93

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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.