Home / 20,916,800.72-31,377,009.40-5,770,731.92

Finding the Fourth Proportional to 20,916,800.72, 31,377,009.40 and 5,770,731.92

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Solution

The fourth proportional to 20,916,800.72, 31,377,009.40 and 5,770,731.92 is: 8,656,596.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916,800.72 : 31,377,009.40 = 5,770,731.92 : x
  2. Step 2: Convert to fraction form
    20,916,800.72/31,377,009.40 = 5,770,731.92/x
  3. Step 3: Cross multiply
    20,916,800.72x = 31,377,009.40 × 5,770,731.92
  4. Step 4: Simplify right side
    20,916,800.72x = 181,068,309,698,720.03
  5. Step 5: Solve for x
    x = 181,068,309,698,720.03/20,916,800.72
  6. Step 6: Final answer
    x = 8,656,596.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.