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Finding the Fourth Proportional to 11,809,898.80, 17,714,848.20 and 10,802,129.20

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Solution

The fourth proportional to 11,809,898.80, 17,714,848.20 and 10,802,129.20 is: 16,203,193.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,809,898.80 : 17,714,848.20 = 10,802,129.20 : x
  2. Step 2: Convert to fraction form
    11,809,898.80/17,714,848.20 = 10,802,129.20/x
  3. Step 3: Cross multiply
    11,809,898.80x = 17,714,848.20 × 10,802,129.20
  4. Step 4: Simplify right side
    11,809,898.80x = 191,358,079,014,787.41
  5. Step 5: Solve for x
    x = 191,358,079,014,787.41/11,809,898.80
  6. Step 6: Final answer
    x = 16,203,193.80

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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.