Home / 13,221,830.20-18,247,906.02-7,420,929.34

Finding the Fourth Proportional to 13,221,830.20, 18,247,906.02 and 7,420,929.34

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Solution

The fourth proportional to 13,221,830.20, 18,247,906.02 and 7,420,929.34 is: 10,241,881.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221,830.20 : 18,247,906.02 = 7,420,929.34 : x
  2. Step 2: Convert to fraction form
    13,221,830.20/18,247,906.02 = 7,420,929.34/x
  3. Step 3: Cross multiply
    13,221,830.20x = 18,247,906.02 × 7,420,929.34
  4. Step 4: Simplify right side
    13,221,830.20x = 135,416,421,177,380.62
  5. Step 5: Solve for x
    x = 135,416,421,177,380.62/13,221,830.20
  6. Step 6: Final answer
    x = 10,241,881.73

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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.