Home / 20,269.60-30,402.96-5,479.36

Finding the Fourth Proportional to 20,269.60, 30,402.96 and 5,479.36

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Solution

The fourth proportional to 20,269.60, 30,402.96 and 5,479.36 is: 8,218.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.60 : 30,402.96 = 5,479.36 : x
  2. Step 2: Convert to fraction form
    20,269.60/30,402.96 = 5,479.36/x
  3. Step 3: Cross multiply
    20,269.60x = 30,402.96 × 5,479.36
  4. Step 4: Simplify right side
    20,269.60x = 166,588,762.91
  5. Step 5: Solve for x
    x = 166,588,762.91/20,269.60
  6. Step 6: Final answer
    x = 8,218.65

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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.