Home / 15,521,280.82-21,420,029.51-8,645,765.92

Finding the Fourth Proportional to 15,521,280.82, 21,420,029.51 and 8,645,765.92

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Solution

The fourth proportional to 15,521,280.82, 21,420,029.51 and 8,645,765.92 is: 11,931,525.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521,280.82 : 21,420,029.51 = 8,645,765.92 : x
  2. Step 2: Convert to fraction form
    15,521,280.82/21,420,029.51 = 8,645,765.92/x
  3. Step 3: Cross multiply
    15,521,280.82x = 21,420,029.51 × 8,645,765.92
  4. Step 4: Simplify right side
    15,521,280.82x = 185,192,561,078,595.03
  5. Step 5: Solve for x
    x = 185,192,561,078,595.03/15,521,280.82
  6. Step 6: Final answer
    x = 11,931,525.71

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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.