Home / 20,434,137.31-28,205,942.79-12,176,789.86

Finding the Fourth Proportional to 20,434,137.31, 28,205,942.79 and 12,176,789.86

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Solution

The fourth proportional to 20,434,137.31, 28,205,942.79 and 12,176,789.86 is: 16,808,042.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434,137.31 : 28,205,942.79 = 12,176,789.86 : x
  2. Step 2: Convert to fraction form
    20,434,137.31/28,205,942.79 = 12,176,789.86/x
  3. Step 3: Cross multiply
    20,434,137.31x = 28,205,942.79 × 12,176,789.86
  4. Step 4: Simplify right side
    20,434,137.31x = 343,457,838,157,012.06
  5. Step 5: Solve for x
    x = 343,457,838,157,012.06/20,434,137.31
  6. Step 6: Final answer
    x = 16,808,042.00

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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.