Home / 12,786,188.96-17,645,570.80-7,279,672.88

Finding the Fourth Proportional to 12,786,188.96, 17,645,570.80 and 7,279,672.88

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Solution

The fourth proportional to 12,786,188.96, 17,645,570.80 and 7,279,672.88 is: 10,046,307.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786,188.96 : 17,645,570.80 = 7,279,672.88 : x
  2. Step 2: Convert to fraction form
    12,786,188.96/17,645,570.80 = 7,279,672.88/x
  3. Step 3: Cross multiply
    12,786,188.96x = 17,645,570.80 × 7,279,672.88
  4. Step 4: Simplify right side
    12,786,188.96x = 128,453,983,204,879.91
  5. Step 5: Solve for x
    x = 128,453,983,204,879.91/12,786,188.96
  6. Step 6: Final answer
    x = 10,046,307.28

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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.