Home / 20,704,416.80-31,056,625.20-13,164,807.20

Finding the Fourth Proportional to 20,704,416.80, 31,056,625.20 and 13,164,807.20

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Solution

The fourth proportional to 20,704,416.80, 31,056,625.20 and 13,164,807.20 is: 19,747,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704,416.80 : 31,056,625.20 = 13,164,807.20 : x
  2. Step 2: Convert to fraction form
    20,704,416.80/31,056,625.20 = 13,164,807.20/x
  3. Step 3: Cross multiply
    20,704,416.80x = 31,056,625.20 × 13,164,807.20
  4. Step 4: Simplify right side
    20,704,416.80x = 408,854,483,040,661.44
  5. Step 5: Solve for x
    x = 408,854,483,040,661.44/20,704,416.80
  6. Step 6: Final answer
    x = 19,747,210.80

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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.