Home / 13,420,442.06-18,520,734.30-7,619,763.50

Finding the Fourth Proportional to 13,420,442.06, 18,520,734.30 and 7,619,763.50

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Solution

The fourth proportional to 13,420,442.06, 18,520,734.30 and 7,619,763.50 is: 10,515,571.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420,442.06 : 18,520,734.30 = 7,619,763.50 : x
  2. Step 2: Convert to fraction form
    13,420,442.06/18,520,734.30 = 7,619,763.50/x
  3. Step 3: Cross multiply
    13,420,442.06x = 18,520,734.30 × 7,619,763.50
  4. Step 4: Simplify right side
    13,420,442.06x = 141,123,615,212,338.06
  5. Step 5: Solve for x
    x = 141,123,615,212,338.06/13,420,442.06
  6. Step 6: Final answer
    x = 10,515,571.29

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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.