Home / 20,782,921.80-31,174,382.70-15,744,073.80

Finding the Fourth Proportional to 20,782,921.80, 31,174,382.70 and 15,744,073.80

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Solution

The fourth proportional to 20,782,921.80, 31,174,382.70 and 15,744,073.80 is: 23,616,110.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782,921.80 : 31,174,382.70 = 15,744,073.80 : x
  2. Step 2: Convert to fraction form
    20,782,921.80/31,174,382.70 = 15,744,073.80/x
  3. Step 3: Cross multiply
    20,782,921.80x = 31,174,382.70 × 15,744,073.80
  4. Step 4: Simplify right side
    20,782,921.80x = 490,811,781,898,243.25
  5. Step 5: Solve for x
    x = 490,811,781,898,243.25/20,782,921.80
  6. Step 6: Final answer
    x = 23,616,110.70

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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.