Home / 15,686,447.46-21,647,822.58-8,717,418.78

Finding the Fourth Proportional to 15,686,447.46, 21,647,822.58 and 8,717,418.78

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Solution

The fourth proportional to 15,686,447.46, 21,647,822.58 and 8,717,418.78 is: 12,030,329.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,447.46 : 21,647,822.58 = 8,717,418.78 : x
  2. Step 2: Convert to fraction form
    15,686,447.46/21,647,822.58 = 8,717,418.78/x
  3. Step 3: Cross multiply
    15,686,447.46x = 21,647,822.58 × 8,717,418.78
  4. Step 4: Simplify right side
    15,686,447.46x = 188,713,135,105,000.03
  5. Step 5: Solve for x
    x = 188,713,135,105,000.03/15,686,447.46
  6. Step 6: Final answer
    x = 12,030,329.72

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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.