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Finding the Fourth Proportional to 19,359.60, 29,042.10 and 8,266.20

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Solution

The fourth proportional to 19,359.60, 29,042.10 and 8,266.20 is: 12,400.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.60 : 29,042.10 = 8,266.20 : x
  2. Step 2: Convert to fraction form
    19,359.60/29,042.10 = 8,266.20/x
  3. Step 3: Cross multiply
    19,359.60x = 29,042.10 × 8,266.20
  4. Step 4: Simplify right side
    19,359.60x = 240,067,807.02
  5. Step 5: Solve for x
    x = 240,067,807.02/19,359.60
  6. Step 6: Final answer
    x = 12,400.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.