Home / 20,774,891.80-31,162,337.70-11,816,939.80

Finding the Fourth Proportional to 20,774,891.80, 31,162,337.70 and 11,816,939.80

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Solution

The fourth proportional to 20,774,891.80, 31,162,337.70 and 11,816,939.80 is: 17,725,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774,891.80 : 31,162,337.70 = 11,816,939.80 : x
  2. Step 2: Convert to fraction form
    20,774,891.80/31,162,337.70 = 11,816,939.80/x
  3. Step 3: Cross multiply
    20,774,891.80x = 31,162,337.70 × 11,816,939.80
  4. Step 4: Simplify right side
    20,774,891.80x = 368,243,468,628,170.50
  5. Step 5: Solve for x
    x = 368,243,468,628,170.50/20,774,891.80
  6. Step 6: Final answer
    x = 17,725,409.70

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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.