Home / 20,715,213.80-31,072,820.70-13,175,604.20

Finding the Fourth Proportional to 20,715,213.80, 31,072,820.70 and 13,175,604.20

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Solution

The fourth proportional to 20,715,213.80, 31,072,820.70 and 13,175,604.20 is: 19,763,406.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715,213.80 : 31,072,820.70 = 13,175,604.20 : x
  2. Step 2: Convert to fraction form
    20,715,213.80/31,072,820.70 = 13,175,604.20/x
  3. Step 3: Cross multiply
    20,715,213.80x = 31,072,820.70 × 13,175,604.20
  4. Step 4: Simplify right side
    20,715,213.80x = 409,403,186,920,766.94
  5. Step 5: Solve for x
    x = 409,403,186,920,766.94/20,715,213.80
  6. Step 6: Final answer
    x = 19,763,406.30

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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.