Home / 12,128,078.70-18,194,742.45-3,609,276.30

Finding the Fourth Proportional to 12,128,078.70, 18,194,742.45 and 3,609,276.30

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Solution

The fourth proportional to 12,128,078.70, 18,194,742.45 and 3,609,276.30 is: 5,414,695.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,078.70 : 18,194,742.45 = 3,609,276.30 : x
  2. Step 2: Convert to fraction form
    12,128,078.70/18,194,742.45 = 3,609,276.30/x
  3. Step 3: Cross multiply
    12,128,078.70x = 18,194,742.45 × 3,609,276.30
  4. Step 4: Simplify right side
    12,128,078.70x = 65,669,852,709,388.93
  5. Step 5: Solve for x
    x = 65,669,852,709,388.93/12,128,078.70
  6. Step 6: Final answer
    x = 5,414,695.46

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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.