Home / 12,489,551.56-18,721,565.82-7,086,788.68

Finding the Fourth Proportional to 12,489,551.56, 18,721,565.82 and 7,086,788.68

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Solution

The fourth proportional to 12,489,551.56, 18,721,565.82 and 7,086,788.68 is: 10,622,941.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489,551.56 : 18,721,565.82 = 7,086,788.68 : x
  2. Step 2: Convert to fraction form
    12,489,551.56/18,721,565.82 = 7,086,788.68/x
  3. Step 3: Cross multiply
    12,489,551.56x = 18,721,565.82 × 7,086,788.68
  4. Step 4: Simplify right side
    12,489,551.56x = 132,675,780,725,050.92
  5. Step 5: Solve for x
    x = 132,675,780,725,050.92/12,489,551.56
  6. Step 6: Final answer
    x = 10,622,941.91

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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.