Home / 15,174,521.82-20,940,825.30-8,205,182.72

Finding the Fourth Proportional to 15,174,521.82, 20,940,825.30 and 8,205,182.72

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Solution

The fourth proportional to 15,174,521.82, 20,940,825.30 and 8,205,182.72 is: 11,323,144.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174,521.82 : 20,940,825.30 = 8,205,182.72 : x
  2. Step 2: Convert to fraction form
    15,174,521.82/20,940,825.30 = 8,205,182.72/x
  3. Step 3: Cross multiply
    15,174,521.82x = 20,940,825.30 × 8,205,182.72
  4. Step 4: Simplify right side
    15,174,521.82x = 171,823,297,894,098.81
  5. Step 5: Solve for x
    x = 171,823,297,894,098.81/15,174,521.82
  6. Step 6: Final answer
    x = 11,323,144.15

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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.