Home / 12,379,472.20-18,571,832.70-3,742,863.40

Finding the Fourth Proportional to 12,379,472.20, 18,571,832.70 and 3,742,863.40

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Solution

The fourth proportional to 12,379,472.20, 18,571,832.70 and 3,742,863.40 is: 5,615,088.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379,472.20 : 18,571,832.70 = 3,742,863.40 : x
  2. Step 2: Convert to fraction form
    12,379,472.20/18,571,832.70 = 3,742,863.40/x
  3. Step 3: Cross multiply
    12,379,472.20x = 18,571,832.70 × 3,742,863.40
  4. Step 4: Simplify right side
    12,379,472.20x = 69,511,832,883,753.17
  5. Step 5: Solve for x
    x = 69,511,832,883,753.17/12,379,472.20
  6. Step 6: Final answer
    x = 5,615,088.57

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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.