Home / 12,188,687.70-16,820,281.74-6,681,962.49

Finding the Fourth Proportional to 12,188,687.70, 16,820,281.74 and 6,681,962.49

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Solution

The fourth proportional to 12,188,687.70, 16,820,281.74 and 6,681,962.49 is: 9,221,049.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188,687.70 : 16,820,281.74 = 6,681,962.49 : x
  2. Step 2: Convert to fraction form
    12,188,687.70/16,820,281.74 = 6,681,962.49/x
  3. Step 3: Cross multiply
    12,188,687.70x = 16,820,281.74 × 6,681,962.49
  4. Step 4: Simplify right side
    12,188,687.70x = 112,392,491,657,911.92
  5. Step 5: Solve for x
    x = 112,392,491,657,911.92/12,188,687.70
  6. Step 6: Final answer
    x = 9,221,049.42

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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.