Home / 20,828,976.96-31,248,453.78-8,691,688.70

Finding the Fourth Proportional to 20,828,976.96, 31,248,453.78 and 8,691,688.70

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Solution

The fourth proportional to 20,828,976.96, 31,248,453.78 and 8,691,688.70 is: 13,039,614.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828,976.96 : 31,248,453.78 = 8,691,688.70 : x
  2. Step 2: Convert to fraction form
    20,828,976.96/31,248,453.78 = 8,691,688.70/x
  3. Step 3: Cross multiply
    20,828,976.96x = 31,248,453.78 × 8,691,688.70
  4. Step 4: Simplify right side
    20,828,976.96x = 271,601,832,573,037.75
  5. Step 5: Solve for x
    x = 271,601,832,573,037.75/20,828,976.96
  6. Step 6: Final answer
    x = 13,039,614.62

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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.