Home / 12,148,122.31-18,228,909.39-7,278,462

Finding the Fourth Proportional to 12,148,122.31, 18,228,909.39 and 7,278,462

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Solution

The fourth proportional to 12,148,122.31, 18,228,909.39 and 7,278,462 is: 10,921,722.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148,122.31 : 18,228,909.39 = 7,278,462 : x
  2. Step 2: Convert to fraction form
    12,148,122.31/18,228,909.39 = 7,278,462/x
  3. Step 3: Cross multiply
    12,148,122.31x = 18,228,909.39 × 7,278,462
  4. Step 4: Simplify right side
    12,148,122.31x = 132,678,424,296,558.19
  5. Step 5: Solve for x
    x = 132,678,424,296,558.19/12,148,122.31
  6. Step 6: Final answer
    x = 10,921,722.79

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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.