Home / 20,601.20-30,918.15-8,124.36

Finding the Fourth Proportional to 20,601.20, 30,918.15 and 8,124.36

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Solution

The fourth proportional to 20,601.20, 30,918.15 and 8,124.36 is: 12,192.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.20 : 30,918.15 = 8,124.36 : x
  2. Step 2: Convert to fraction form
    20,601.20/30,918.15 = 8,124.36/x
  3. Step 3: Cross multiply
    20,601.20x = 30,918.15 × 8,124.36
  4. Step 4: Simplify right side
    20,601.20x = 251,190,181.13
  5. Step 5: Solve for x
    x = 251,190,181.13/20,601.20
  6. Step 6: Final answer
    x = 12,192.99

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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.