Home / 13,872,939.72-20,809,019.10-3,775,648.20

Finding the Fourth Proportional to 13,872,939.72, 20,809,019.10 and 3,775,648.20

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Solution

The fourth proportional to 13,872,939.72, 20,809,019.10 and 3,775,648.20 is: 5,663,366.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872,939.72 : 20,809,019.10 = 3,775,648.20 : x
  2. Step 2: Convert to fraction form
    13,872,939.72/20,809,019.10 = 3,775,648.20/x
  3. Step 3: Cross multiply
    13,872,939.72x = 20,809,019.10 × 3,775,648.20
  4. Step 4: Simplify right side
    13,872,939.72x = 78,567,535,508,680.62
  5. Step 5: Solve for x
    x = 78,567,535,508,680.62/13,872,939.72
  6. Step 6: Final answer
    x = 5,663,366.03

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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.