Home / 18,959,406.20-28,439,109.30-12,156,961.40

Finding the Fourth Proportional to 18,959,406.20, 28,439,109.30 and 12,156,961.40

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Solution

The fourth proportional to 18,959,406.20, 28,439,109.30 and 12,156,961.40 is: 18,235,442.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959,406.20 : 28,439,109.30 = 12,156,961.40 : x
  2. Step 2: Convert to fraction form
    18,959,406.20/28,439,109.30 = 12,156,961.40/x
  3. Step 3: Cross multiply
    18,959,406.20x = 28,439,109.30 × 12,156,961.40
  4. Step 4: Simplify right side
    18,959,406.20x = 345,733,154,010,481.06
  5. Step 5: Solve for x
    x = 345,733,154,010,481.06/18,959,406.20
  6. Step 6: Final answer
    x = 18,235,442.10

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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.