Home / 15,890,992.80-21,929,487.12-8,647,700.64

Finding the Fourth Proportional to 15,890,992.80, 21,929,487.12 and 8,647,700.64

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Solution

The fourth proportional to 15,890,992.80, 21,929,487.12 and 8,647,700.64 is: 11,933,781.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890,992.80 : 21,929,487.12 = 8,647,700.64 : x
  2. Step 2: Convert to fraction form
    15,890,992.80/21,929,487.12 = 8,647,700.64/x
  3. Step 3: Cross multiply
    15,890,992.80x = 21,929,487.12 × 8,647,700.64
  4. Step 4: Simplify right side
    15,890,992.80x = 189,639,639,802,495.78
  5. Step 5: Solve for x
    x = 189,639,639,802,495.78/15,890,992.80
  6. Step 6: Final answer
    x = 11,933,781.75

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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.