Home / 20,380,824.84-28,114,818.48-12,115,007.76

Finding the Fourth Proportional to 20,380,824.84, 28,114,818.48 and 12,115,007.76

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Solution

The fourth proportional to 20,380,824.84, 28,114,818.48 and 12,115,007.76 is: 16,712,338.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380,824.84 : 28,114,818.48 = 12,115,007.76 : x
  2. Step 2: Convert to fraction form
    20,380,824.84/28,114,818.48 = 12,115,007.76/x
  3. Step 3: Cross multiply
    20,380,824.84x = 28,114,818.48 × 12,115,007.76
  4. Step 4: Simplify right side
    20,380,824.84x = 340,611,244,056,191.38
  5. Step 5: Solve for x
    x = 340,611,244,056,191.38/20,380,824.84
  6. Step 6: Final answer
    x = 16,712,338.52

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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.