Home / 12,405,998.88-17,120,288.52-6,899,253.84

Finding the Fourth Proportional to 12,405,998.88, 17,120,288.52 and 6,899,253.84

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Solution

The fourth proportional to 12,405,998.88, 17,120,288.52 and 6,899,253.84 is: 9,520,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405,998.88 : 17,120,288.52 = 6,899,253.84 : x
  2. Step 2: Convert to fraction form
    12,405,998.88/17,120,288.52 = 6,899,253.84/x
  3. Step 3: Cross multiply
    12,405,998.88x = 17,120,288.52 × 6,899,253.84
  4. Step 4: Simplify right side
    12,405,998.88x = 118,117,216,313,517.91
  5. Step 5: Solve for x
    x = 118,117,216,313,517.91/12,405,998.88
  6. Step 6: Final answer
    x = 9,520,975.90

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1.5x scale

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.