Home / 20,806,969.20-31,210,453.80-5,660,900.70

Finding the Fourth Proportional to 20,806,969.20, 31,210,453.80 and 5,660,900.70

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Solution

The fourth proportional to 20,806,969.20, 31,210,453.80 and 5,660,900.70 is: 8,491,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806,969.20 : 31,210,453.80 = 5,660,900.70 : x
  2. Step 2: Convert to fraction form
    20,806,969.20/31,210,453.80 = 5,660,900.70/x
  3. Step 3: Cross multiply
    20,806,969.20x = 31,210,453.80 × 5,660,900.70
  4. Step 4: Simplify right side
    20,806,969.20x = 176,679,279,763,737.66
  5. Step 5: Solve for x
    x = 176,679,279,763,737.66/20,806,969.20
  6. Step 6: Final answer
    x = 8,491,351.05

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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.