Home / 21,079,991.40-31,631,796.90-8,947,390.20

Finding the Fourth Proportional to 21,079,991.40, 31,631,796.90 and 8,947,390.20

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Solution

The fourth proportional to 21,079,991.40, 31,631,796.90 and 8,947,390.20 is: 13,426,097.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079,991.40 : 31,631,796.90 = 8,947,390.20 : x
  2. Step 2: Convert to fraction form
    21,079,991.40/31,631,796.90 = 8,947,390.20/x
  3. Step 3: Cross multiply
    21,079,991.40x = 31,631,796.90 × 8,947,390.20
  4. Step 4: Simplify right side
    21,079,991.40x = 283,022,029,591,450.31
  5. Step 5: Solve for x
    x = 283,022,029,591,450.31/21,079,991.40
  6. Step 6: Final answer
    x = 13,426,097.96

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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.