Home / 20,380,822.59-28,114,815.38-12,115,005.51

Finding the Fourth Proportional to 20,380,822.59, 28,114,815.38 and 12,115,005.51

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Solution

The fourth proportional to 20,380,822.59, 28,114,815.38 and 12,115,005.51 is: 16,712,335.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380,822.59 : 28,114,815.38 = 12,115,005.51 : x
  2. Step 2: Convert to fraction form
    20,380,822.59/28,114,815.38 = 12,115,005.51/x
  3. Step 3: Cross multiply
    20,380,822.59x = 28,114,815.38 × 12,115,005.51
  4. Step 4: Simplify right side
    20,380,822.59x = 340,611,143,180,757.69
  5. Step 5: Solve for x
    x = 340,611,143,180,757.69/20,380,822.59
  6. Step 6: Final answer
    x = 16,712,335.42

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1.5x scale

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.