Home / 20,849.20-31,280.20-16,468.40

Finding the Fourth Proportional to 20,849.20, 31,280.20 and 16,468.40

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Solution

The fourth proportional to 20,849.20, 31,280.20 and 16,468.40 is: 24,707.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.20 : 31,280.20 = 16,468.40 : x
  2. Step 2: Convert to fraction form
    20,849.20/31,280.20 = 16,468.40/x
  3. Step 3: Cross multiply
    20,849.20x = 31,280.20 × 16,468.40
  4. Step 4: Simplify right side
    20,849.20x = 515,134,845.68
  5. Step 5: Solve for x
    x = 515,134,845.68/20,849.20
  6. Step 6: Final answer
    x = 24,707.66

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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.