Home / 20,014.90-30,046.95-12,650.18

Finding the Fourth Proportional to 20,014.90, 30,046.95 and 12,650.18

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Solution

The fourth proportional to 20,014.90, 30,046.95 and 12,650.18 is: 18,990.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,014.90 : 30,046.95 = 12,650.18 : x
  2. Step 2: Convert to fraction form
    20,014.90/30,046.95 = 12,650.18/x
  3. Step 3: Cross multiply
    20,014.90x = 30,046.95 × 12,650.18
  4. Step 4: Simplify right side
    20,014.90x = 380,099,175.72
  5. Step 5: Solve for x
    x = 380,099,175.72/20,014.90
  6. Step 6: Final answer
    x = 18,990.81

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1.5x scale

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.