Home / 13,209,320.35-18,228,994.13-7,407,977.54

Finding the Fourth Proportional to 13,209,320.35, 18,228,994.13 and 7,407,977.54

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Solution

The fourth proportional to 13,209,320.35, 18,228,994.13 and 7,407,977.54 is: 10,223,083.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209,320.35 : 18,228,994.13 = 7,407,977.54 : x
  2. Step 2: Convert to fraction form
    13,209,320.35/18,228,994.13 = 7,407,977.54/x
  3. Step 3: Cross multiply
    13,209,320.35x = 18,228,994.13 × 7,407,977.54
  4. Step 4: Simplify right side
    13,209,320.35x = 135,039,978,963,646.98
  5. Step 5: Solve for x
    x = 135,039,978,963,646.98/13,209,320.35
  6. Step 6: Final answer
    x = 10,223,083.05

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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.