Home / 20,271.58-30,407.38-5,480.87

Finding the Fourth Proportional to 20,271.58, 30,407.38 and 5,480.87

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Solution

The fourth proportional to 20,271.58, 30,407.38 and 5,480.87 is: 8,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.58 : 30,407.38 = 5,480.87 : x
  2. Step 2: Convert to fraction form
    20,271.58/30,407.38 = 5,480.87/x
  3. Step 3: Cross multiply
    20,271.58x = 30,407.38 × 5,480.87
  4. Step 4: Simplify right side
    20,271.58x = 166,658,731.08
  5. Step 5: Solve for x
    x = 166,658,731.08/20,271.58
  6. Step 6: Final answer
    x = 8,221.30

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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.