Home / 11,726.82-16,182.41-6,420.61

Finding the Fourth Proportional to 11,726.82, 16,182.41 and 6,420.61

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Solution

The fourth proportional to 11,726.82, 16,182.41 and 6,420.61 is: 8,860.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,726.82 : 16,182.41 = 6,420.61 : x
  2. Step 2: Convert to fraction form
    11,726.82/16,182.41 = 6,420.61/x
  3. Step 3: Cross multiply
    11,726.82x = 16,182.41 × 6,420.61
  4. Step 4: Simplify right side
    11,726.82x = 103,900,870.91
  5. Step 5: Solve for x
    x = 103,900,870.91/11,726.82
  6. Step 6: Final answer
    x = 8,860.11

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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.