Home / 20,838,542.64-31,241,121.07-9,903,243.75

Finding the Fourth Proportional to 20,838,542.64, 31,241,121.07 and 9,903,243.75

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Solution

The fourth proportional to 20,838,542.64, 31,241,121.07 and 9,903,243.75 is: 14,846,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838,542.64 : 31,241,121.07 = 9,903,243.75 : x
  2. Step 2: Convert to fraction form
    20,838,542.64/31,241,121.07 = 9,903,243.75/x
  3. Step 3: Cross multiply
    20,838,542.64x = 31,241,121.07 × 9,903,243.75
  4. Step 4: Simplify right side
    20,838,542.64x = 309,388,436,979,470.81
  5. Step 5: Solve for x
    x = 309,388,436,979,470.81/20,838,542.64
  6. Step 6: Final answer
    x = 14,846,932.55

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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.