Home / 20,971,253.85-31,416,579.83-12,860,578.46

Finding the Fourth Proportional to 20,971,253.85, 31,416,579.83 and 12,860,578.46

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Solution

The fourth proportional to 20,971,253.85, 31,416,579.83 and 12,860,578.46 is: 19,266,153.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971,253.85 : 31,416,579.83 = 12,860,578.46 : x
  2. Step 2: Convert to fraction form
    20,971,253.85/31,416,579.83 = 12,860,578.46/x
  3. Step 3: Cross multiply
    20,971,253.85x = 31,416,579.83 × 12,860,578.46
  4. Step 4: Simplify right side
    20,971,253.85x = 404,035,389,627,182.69
  5. Step 5: Solve for x
    x = 404,035,389,627,182.69/20,971,253.85
  6. Step 6: Final answer
    x = 19,266,153.21

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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.