Home / 20,891,441.49-28,810,153.48-13,441,499.80

Finding the Fourth Proportional to 20,891,441.49, 28,810,153.48 and 13,441,499.80

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Solution

The fourth proportional to 20,891,441.49, 28,810,153.48 and 13,441,499.80 is: 18,536,378.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,891,441.49 : 28,810,153.48 = 13,441,499.80 : x
  2. Step 2: Convert to fraction form
    20,891,441.49/28,810,153.48 = 13,441,499.80/x
  3. Step 3: Cross multiply
    20,891,441.49x = 28,810,153.48 × 13,441,499.80
  4. Step 4: Simplify right side
    20,891,441.49x = 387,251,672,172,181.88
  5. Step 5: Solve for x
    x = 387,251,672,172,181.88/20,891,441.49
  6. Step 6: Final answer
    x = 18,536,378.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.