Home / 20,966,793.12-28,929,387.60-11,796,089.76

Finding the Fourth Proportional to 20,966,793.12, 28,929,387.60 and 11,796,089.76

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Solution

The fourth proportional to 20,966,793.12, 28,929,387.60 and 11,796,089.76 is: 16,275,910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966,793.12 : 28,929,387.60 = 11,796,089.76 : x
  2. Step 2: Convert to fraction form
    20,966,793.12/28,929,387.60 = 11,796,089.76/x
  3. Step 3: Cross multiply
    20,966,793.12x = 28,929,387.60 × 11,796,089.76
  4. Step 4: Simplify right side
    20,966,793.12x = 341,253,652,831,431
  5. Step 5: Solve for x
    x = 341,253,652,831,431/20,966,793.12
  6. Step 6: Final answer
    x = 16,275,910.72

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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.