Home / 20,614.50-28,447.74-11,183.40

Finding the Fourth Proportional to 20,614.50, 28,447.74 and 11,183.40

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Solution

The fourth proportional to 20,614.50, 28,447.74 and 11,183.40 is: 15,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,614.50 : 28,447.74 = 11,183.40 : x
  2. Step 2: Convert to fraction form
    20,614.50/28,447.74 = 11,183.40/x
  3. Step 3: Cross multiply
    20,614.50x = 28,447.74 × 11,183.40
  4. Step 4: Simplify right side
    20,614.50x = 318,142,455.52
  5. Step 5: Solve for x
    x = 318,142,455.52/20,614.50
  6. Step 6: Final answer
    x = 15,432.95

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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.