Home / 13,209,320.85-18,228,994.82-7,407,978.03

Finding the Fourth Proportional to 13,209,320.85, 18,228,994.82 and 7,407,978.03

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Solution

The fourth proportional to 13,209,320.85, 18,228,994.82 and 7,407,978.03 is: 10,223,083.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209,320.85 : 18,228,994.82 = 7,407,978.03 : x
  2. Step 2: Convert to fraction form
    13,209,320.85/18,228,994.82 = 7,407,978.03/x
  3. Step 3: Cross multiply
    13,209,320.85x = 18,228,994.82 × 7,407,978.03
  4. Step 4: Simplify right side
    13,209,320.85x = 135,039,993,098,503.92
  5. Step 5: Solve for x
    x = 135,039,993,098,503.92/13,209,320.85
  6. Step 6: Final answer
    x = 10,223,083.73

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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.