Home / 20,739,783.92-31,111,170.57-7,960,288.64

Finding the Fourth Proportional to 20,739,783.92, 31,111,170.57 and 7,960,288.64

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Solution

The fourth proportional to 20,739,783.92, 31,111,170.57 and 7,960,288.64 is: 11,941,006.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,783.92 : 31,111,170.57 = 7,960,288.64 : x
  2. Step 2: Convert to fraction form
    20,739,783.92/31,111,170.57 = 7,960,288.64/x
  3. Step 3: Cross multiply
    20,739,783.92x = 31,111,170.57 × 7,960,288.64
  4. Step 4: Simplify right side
    20,739,783.92x = 247,653,897,509,917.47
  5. Step 5: Solve for x
    x = 247,653,897,509,917.47/20,739,783.92
  6. Step 6: Final answer
    x = 11,941,006.64

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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.