Home / 20,781,865.32-28,679,015.70-11,614,507.80

Finding the Fourth Proportional to 20,781,865.32, 28,679,015.70 and 11,614,507.80

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Solution

The fourth proportional to 20,781,865.32, 28,679,015.70 and 11,614,507.80 is: 16,028,043.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,865.32 : 28,679,015.70 = 11,614,507.80 : x
  2. Step 2: Convert to fraction form
    20,781,865.32/28,679,015.70 = 11,614,507.80/x
  3. Step 3: Cross multiply
    20,781,865.32x = 28,679,015.70 × 11,614,507.80
  4. Step 4: Simplify right side
    20,781,865.32x = 333,092,651,543,972.50
  5. Step 5: Solve for x
    x = 333,092,651,543,972.50/20,781,865.32
  6. Step 6: Final answer
    x = 16,028,043.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.