Home / 20,793.16-31,197.50-12,479.14

Finding the Fourth Proportional to 20,793.16, 31,197.50 and 12,479.14

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Solution

The fourth proportional to 20,793.16, 31,197.50 and 12,479.14 is: 18,723.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.16 : 31,197.50 = 12,479.14 : x
  2. Step 2: Convert to fraction form
    20,793.16/31,197.50 = 12,479.14/x
  3. Step 3: Cross multiply
    20,793.16x = 31,197.50 × 12,479.14
  4. Step 4: Simplify right side
    20,793.16x = 389,317,970.15
  5. Step 5: Solve for x
    x = 389,317,970.15/20,793.16
  6. Step 6: Final answer
    x = 18,723.37

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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.