Home / 20,786,660.20-31,179,990.30-13,133,909.80

Finding the Fourth Proportional to 20,786,660.20, 31,179,990.30 and 13,133,909.80

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Solution

The fourth proportional to 20,786,660.20, 31,179,990.30 and 13,133,909.80 is: 19,700,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786,660.20 : 31,179,990.30 = 13,133,909.80 : x
  2. Step 2: Convert to fraction form
    20,786,660.20/31,179,990.30 = 13,133,909.80/x
  3. Step 3: Cross multiply
    20,786,660.20x = 31,179,990.30 × 13,133,909.80
  4. Step 4: Simplify right side
    20,786,660.20x = 409,515,180,165,075
  5. Step 5: Solve for x
    x = 409,515,180,165,075/20,786,660.20
  6. Step 6: Final answer
    x = 19,700,864.70

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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.