Home / 20,380,822.84-28,114,815.72-12,115,005.76

Finding the Fourth Proportional to 20,380,822.84, 28,114,815.72 and 12,115,005.76

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Solution

The fourth proportional to 20,380,822.84, 28,114,815.72 and 12,115,005.76 is: 16,712,335.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380,822.84 : 28,114,815.72 = 12,115,005.76 : x
  2. Step 2: Convert to fraction form
    20,380,822.84/28,114,815.72 = 12,115,005.76/x
  3. Step 3: Cross multiply
    20,380,822.84x = 28,114,815.72 × 12,115,005.76
  4. Step 4: Simplify right side
    20,380,822.84x = 340,611,154,389,138.50
  5. Step 5: Solve for x
    x = 340,611,154,389,138.50/20,380,822.84
  6. Step 6: Final answer
    x = 16,712,335.76

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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.