Home / 20,269.76-30,404.48-5,480.16

Finding the Fourth Proportional to 20,269.76, 30,404.48 and 5,480.16

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Solution

The fourth proportional to 20,269.76, 30,404.48 and 5,480.16 is: 8,220.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.76 : 30,404.48 = 5,480.16 : x
  2. Step 2: Convert to fraction form
    20,269.76/30,404.48 = 5,480.16/x
  3. Step 3: Cross multiply
    20,269.76x = 30,404.48 × 5,480.16
  4. Step 4: Simplify right side
    20,269.76x = 166,621,415.12
  5. Step 5: Solve for x
    x = 166,621,415.12/20,269.76
  6. Step 6: Final answer
    x = 8,220.20

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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.