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Finding the Fourth Proportional to 19,336.64, 29,008.80 and 8,243.20

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Solution

The fourth proportional to 19,336.64, 29,008.80 and 8,243.20 is: 12,366.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,336.64 : 29,008.80 = 8,243.20 : x
  2. Step 2: Convert to fraction form
    19,336.64/29,008.80 = 8,243.20/x
  3. Step 3: Cross multiply
    19,336.64x = 29,008.80 × 8,243.20
  4. Step 4: Simplify right side
    19,336.64x = 239,125,340.16
  5. Step 5: Solve for x
    x = 239,125,340.16/19,336.64
  6. Step 6: Final answer
    x = 12,366.44

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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.