Home / 21,539.32-29,726.60-12,589.83

Finding the Fourth Proportional to 21,539.32, 29,726.60 and 12,589.83

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Solution

The fourth proportional to 21,539.32, 29,726.60 and 12,589.83 is: 17,375.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.32 : 29,726.60 = 12,589.83 : x
  2. Step 2: Convert to fraction form
    21,539.32/29,726.60 = 12,589.83/x
  3. Step 3: Cross multiply
    21,539.32x = 29,726.60 × 12,589.83
  4. Step 4: Simplify right side
    21,539.32x = 374,252,777.53
  5. Step 5: Solve for x
    x = 374,252,777.53/21,539.32
  6. Step 6: Final answer
    x = 17,375.33

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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.