Home / 20,827.20-31,269.60-16,449.60

Finding the Fourth Proportional to 20,827.20, 31,269.60 and 16,449.60

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Solution

The fourth proportional to 20,827.20, 31,269.60 and 16,449.60 is: 24,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.20 : 31,269.60 = 16,449.60 : x
  2. Step 2: Convert to fraction form
    20,827.20/31,269.60 = 16,449.60/x
  3. Step 3: Cross multiply
    20,827.20x = 31,269.60 × 16,449.60
  4. Step 4: Simplify right side
    20,827.20x = 514,372,412.16
  5. Step 5: Solve for x
    x = 514,372,412.16/20,827.20
  6. Step 6: Final answer
    x = 24,697.15

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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.