Home / 20,982,576.48-28,955,922.12-11,815,284.84

Finding the Fourth Proportional to 20,982,576.48, 28,955,922.12 and 11,815,284.84

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Solution

The fourth proportional to 20,982,576.48, 28,955,922.12 and 11,815,284.84 is: 16,305,074.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982,576.48 : 28,955,922.12 = 11,815,284.84 : x
  2. Step 2: Convert to fraction form
    20,982,576.48/28,955,922.12 = 11,815,284.84/x
  3. Step 3: Cross multiply
    20,982,576.48x = 28,955,922.12 × 11,815,284.84
  4. Step 4: Simplify right side
    20,982,576.48x = 342,122,467,652,656.69
  5. Step 5: Solve for x
    x = 342,122,467,652,656.69/20,982,576.48
  6. Step 6: Final answer
    x = 16,305,074.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.