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Finding the Fourth Proportional to 12,909,494.14, 17,815,493.84 and 7,108,483.48

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Solution

The fourth proportional to 12,909,494.14, 17,815,493.84 and 7,108,483.48 is: 9,809,923.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909,494.14 : 17,815,493.84 = 7,108,483.48 : x
  2. Step 2: Convert to fraction form
    12,909,494.14/17,815,493.84 = 7,108,483.48/x
  3. Step 3: Cross multiply
    12,909,494.14x = 17,815,493.84 × 7,108,483.48
  4. Step 4: Simplify right side
    12,909,494.14x = 126,641,143,569,600.62
  5. Step 5: Solve for x
    x = 126,641,143,569,600.62/12,909,494.14
  6. Step 6: Final answer
    x = 9,809,923.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.