Home / 20,100.90-30,162.15-8,415.30

Finding the Fourth Proportional to 20,100.90, 30,162.15 and 8,415.30

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Solution

The fourth proportional to 20,100.90, 30,162.15 and 8,415.30 is: 12,627.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.90 : 30,162.15 = 8,415.30 : x
  2. Step 2: Convert to fraction form
    20,100.90/30,162.15 = 8,415.30/x
  3. Step 3: Cross multiply
    20,100.90x = 30,162.15 × 8,415.30
  4. Step 4: Simplify right side
    20,100.90x = 253,823,540.90
  5. Step 5: Solve for x
    x = 253,823,540.90/20,100.90
  6. Step 6: Final answer
    x = 12,627.47

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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.