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Finding the Fourth Proportional to 19,083.20, 28,630.80 and 9,222.80

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Solution

The fourth proportional to 19,083.20, 28,630.80 and 9,222.80 is: 13,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,083.20 : 28,630.80 = 9,222.80 : x
  2. Step 2: Convert to fraction form
    19,083.20/28,630.80 = 9,222.80/x
  3. Step 3: Cross multiply
    19,083.20x = 28,630.80 × 9,222.80
  4. Step 4: Simplify right side
    19,083.20x = 264,056,142.24
  5. Step 5: Solve for x
    x = 264,056,142.24/19,083.20
  6. Step 6: Final answer
    x = 13,837.10

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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.