Home / 20,725,936.40-31,046,914.20-11,739,990.80

Finding the Fourth Proportional to 20,725,936.40, 31,046,914.20 and 11,739,990.80

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Solution

The fourth proportional to 20,725,936.40, 31,046,914.20 and 11,739,990.80 is: 17,586,201.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725,936.40 : 31,046,914.20 = 11,739,990.80 : x
  2. Step 2: Convert to fraction form
    20,725,936.40/31,046,914.20 = 11,739,990.80/x
  3. Step 3: Cross multiply
    20,725,936.40x = 31,046,914.20 × 11,739,990.80
  4. Step 4: Simplify right side
    20,725,936.40x = 364,490,487,076,389.38
  5. Step 5: Solve for x
    x = 364,490,487,076,389.38/20,725,936.40
  6. Step 6: Final answer
    x = 17,586,201.18

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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.