Home / 20,815,571.60-31,226,331.72-6,439,866.56

Finding the Fourth Proportional to 20,815,571.60, 31,226,331.72 and 6,439,866.56

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Solution

The fourth proportional to 20,815,571.60, 31,226,331.72 and 6,439,866.56 is: 9,660,720.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,815,571.60 : 31,226,331.72 = 6,439,866.56 : x
  2. Step 2: Convert to fraction form
    20,815,571.60/31,226,331.72 = 6,439,866.56/x
  3. Step 3: Cross multiply
    20,815,571.60x = 31,226,331.72 × 6,439,866.56
  4. Step 4: Simplify right side
    20,815,571.60x = 201,093,409,435,095.25
  5. Step 5: Solve for x
    x = 201,093,409,435,095.25/20,815,571.60
  6. Step 6: Final answer
    x = 9,660,720.03

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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.