Home / 18,669,172-28,008,481.20-5,206,001.44

Finding the Fourth Proportional to 18,669,172, 28,008,481.20 and 5,206,001.44

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Solution

The fourth proportional to 18,669,172, 28,008,481.20 and 5,206,001.44 is: 7,810,319.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669,172 : 28,008,481.20 = 5,206,001.44 : x
  2. Step 2: Convert to fraction form
    18,669,172/28,008,481.20 = 5,206,001.44/x
  3. Step 3: Cross multiply
    18,669,172x = 28,008,481.20 × 5,206,001.44
  4. Step 4: Simplify right side
    18,669,172x = 145,812,193,459,412.94
  5. Step 5: Solve for x
    x = 145,812,193,459,412.94/18,669,172
  6. Step 6: Final answer
    x = 7,810,319.25

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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.