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Finding the Fourth Proportional to 19,242.54, 28,866.84 and 8,149.30

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Solution

The fourth proportional to 19,242.54, 28,866.84 and 8,149.30 is: 12,225.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,242.54 : 28,866.84 = 8,149.30 : x
  2. Step 2: Convert to fraction form
    19,242.54/28,866.84 = 8,149.30/x
  3. Step 3: Cross multiply
    19,242.54x = 28,866.84 × 8,149.30
  4. Step 4: Simplify right side
    19,242.54x = 235,244,539.21
  5. Step 5: Solve for x
    x = 235,244,539.21/19,242.54
  6. Step 6: Final answer
    x = 12,225.23

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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.