Home / 12,142,620.80-18,190,311.60-7,336,032.20

Finding the Fourth Proportional to 12,142,620.80, 18,190,311.60 and 7,336,032.20

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Solution

The fourth proportional to 12,142,620.80, 18,190,311.60 and 7,336,032.20 is: 10,989,778.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142,620.80 : 18,190,311.60 = 7,336,032.20 : x
  2. Step 2: Convert to fraction form
    12,142,620.80/18,190,311.60 = 7,336,032.20/x
  3. Step 3: Cross multiply
    12,142,620.80x = 18,190,311.60 × 7,336,032.20
  4. Step 4: Simplify right side
    12,142,620.80x = 133,444,711,625,633.53
  5. Step 5: Solve for x
    x = 133,444,711,625,633.53/12,142,620.80
  6. Step 6: Final answer
    x = 10,989,778.39

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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.