Home / 20,704,412.80-31,056,619.20-13,164,803.20

Finding the Fourth Proportional to 20,704,412.80, 31,056,619.20 and 13,164,803.20

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Solution

The fourth proportional to 20,704,412.80, 31,056,619.20 and 13,164,803.20 is: 19,747,204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704,412.80 : 31,056,619.20 = 13,164,803.20 : x
  2. Step 2: Convert to fraction form
    20,704,412.80/31,056,619.20 = 13,164,803.20/x
  3. Step 3: Cross multiply
    20,704,412.80x = 31,056,619.20 × 13,164,803.20
  4. Step 4: Simplify right side
    20,704,412.80x = 408,854,279,825,341.44
  5. Step 5: Solve for x
    x = 408,854,279,825,341.44/20,704,412.80
  6. Step 6: Final answer
    x = 19,747,204.80

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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.