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Finding the Fourth Proportional to 13,978,752.48, 19,291,299.12 and 7,867,576.80

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Solution

The fourth proportional to 13,978,752.48, 19,291,299.12 and 7,867,576.80 is: 10,857,605.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,978,752.48 : 19,291,299.12 = 7,867,576.80 : x
  2. Step 2: Convert to fraction form
    13,978,752.48/19,291,299.12 = 7,867,576.80/x
  3. Step 3: Cross multiply
    13,978,752.48x = 19,291,299.12 × 7,867,576.80
  4. Step 4: Simplify right side
    13,978,752.48x = 151,775,777,398,372.41
  5. Step 5: Solve for x
    x = 151,775,777,398,372.41/13,978,752.48
  6. Step 6: Final answer
    x = 10,857,605.33

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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.