Home / 12,248,939.20-18,361,057.70-7,703,236.60

Finding the Fourth Proportional to 12,248,939.20, 18,361,057.70 and 7,703,236.60

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Solution

The fourth proportional to 12,248,939.20, 18,361,057.70 and 7,703,236.60 is: 11,547,087.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,248,939.20 : 18,361,057.70 = 7,703,236.60 : x
  2. Step 2: Convert to fraction form
    12,248,939.20/18,361,057.70 = 7,703,236.60/x
  3. Step 3: Cross multiply
    12,248,939.20x = 18,361,057.70 × 7,703,236.60
  4. Step 4: Simplify right side
    12,248,939.20x = 141,439,571,689,351.81
  5. Step 5: Solve for x
    x = 141,439,571,689,351.81/12,248,939.20
  6. Step 6: Final answer
    x = 11,547,087.42

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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.