Home / 13,578,067.65-18,737,772.12-7,383,116.76

Finding the Fourth Proportional to 13,578,067.65, 18,737,772.12 and 7,383,116.76

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Solution

The fourth proportional to 13,578,067.65, 18,737,772.12 and 7,383,116.76 is: 10,188,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578,067.65 : 18,737,772.12 = 7,383,116.76 : x
  2. Step 2: Convert to fraction form
    13,578,067.65/18,737,772.12 = 7,383,116.76/x
  3. Step 3: Cross multiply
    13,578,067.65x = 18,737,772.12 × 7,383,116.76
  4. Step 4: Simplify right side
    13,578,067.65x = 138,343,159,384,232.73
  5. Step 5: Solve for x
    x = 138,343,159,384,232.73/13,578,067.65
  6. Step 6: Final answer
    x = 10,188,722.21

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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.