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Finding the Fourth Proportional to 19,223.72, 28,839.46 and 8,130.44

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Solution

The fourth proportional to 19,223.72, 28,839.46 and 8,130.44 is: 12,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,223.72 : 28,839.46 = 8,130.44 : x
  2. Step 2: Convert to fraction form
    19,223.72/28,839.46 = 8,130.44/x
  3. Step 3: Cross multiply
    19,223.72x = 28,839.46 × 8,130.44
  4. Step 4: Simplify right side
    19,223.72x = 234,477,499.16
  5. Step 5: Solve for x
    x = 234,477,499.16/19,223.72
  6. Step 6: Final answer
    x = 12,197.30

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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.