Home / 20,994.42-31,530.51-16,639.86

Finding the Fourth Proportional to 20,994.42, 31,530.51 and 16,639.86

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Solution

The fourth proportional to 20,994.42, 31,530.51 and 16,639.86 is: 24,990.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.42 : 31,530.51 = 16,639.86 : x
  2. Step 2: Convert to fraction form
    20,994.42/31,530.51 = 16,639.86/x
  3. Step 3: Cross multiply
    20,994.42x = 31,530.51 × 16,639.86
  4. Step 4: Simplify right side
    20,994.42x = 524,663,272.13
  5. Step 5: Solve for x
    x = 524,663,272.13/20,994.42
  6. Step 6: Final answer
    x = 24,990.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.