Home / 12,128,489.65-18,188,305.80-4,041,729.10

Finding the Fourth Proportional to 12,128,489.65, 18,188,305.80 and 4,041,729.10

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Solution

The fourth proportional to 12,128,489.65, 18,188,305.80 and 4,041,729.10 is: 6,061,117.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,489.65 : 18,188,305.80 = 4,041,729.10 : x
  2. Step 2: Convert to fraction form
    12,128,489.65/18,188,305.80 = 4,041,729.10/x
  3. Step 3: Cross multiply
    12,128,489.65x = 18,188,305.80 × 4,041,729.10
  4. Step 4: Simplify right side
    12,128,489.65x = 73,512,204,831,558.78
  5. Step 5: Solve for x
    x = 73,512,204,831,558.78/12,128,489.65
  6. Step 6: Final answer
    x = 6,061,117.83

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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.