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Finding the Fourth Proportional to 13,318,744.44, 19,978,677.19 and 4,221,201.01

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Solution

The fourth proportional to 13,318,744.44, 19,978,677.19 and 4,221,201.01 is: 6,331,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318,744.44 : 19,978,677.19 = 4,221,201.01 : x
  2. Step 2: Convert to fraction form
    13,318,744.44/19,978,677.19 = 4,221,201.01/x
  3. Step 3: Cross multiply
    13,318,744.44x = 19,978,677.19 × 4,221,201.01
  4. Step 4: Simplify right side
    13,318,744.44x = 84,334,012,301,937.55
  5. Step 5: Solve for x
    x = 84,334,012,301,937.55/13,318,744.44
  6. Step 6: Final answer
    x = 6,331,979.16

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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.