Home / 13,419,020.70-20,128,531.05-8,632,115.10

Finding the Fourth Proportional to 13,419,020.70, 20,128,531.05 and 8,632,115.10

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Solution

The fourth proportional to 13,419,020.70, 20,128,531.05 and 8,632,115.10 is: 12,948,172.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419,020.70 : 20,128,531.05 = 8,632,115.10 : x
  2. Step 2: Convert to fraction form
    13,419,020.70/20,128,531.05 = 8,632,115.10/x
  3. Step 3: Cross multiply
    13,419,020.70x = 20,128,531.05 × 8,632,115.10
  4. Step 4: Simplify right side
    13,419,020.70x = 173,751,796,817,523.84
  5. Step 5: Solve for x
    x = 173,751,796,817,523.84/13,419,020.70
  6. Step 6: Final answer
    x = 12,948,172.65

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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.