Home / 20,127.10-30,205.05-8,448.70

Finding the Fourth Proportional to 20,127.10, 30,205.05 and 8,448.70

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Solution

The fourth proportional to 20,127.10, 30,205.05 and 8,448.70 is: 12,679.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.10 : 30,205.05 = 8,448.70 : x
  2. Step 2: Convert to fraction form
    20,127.10/30,205.05 = 8,448.70/x
  3. Step 3: Cross multiply
    20,127.10x = 30,205.05 × 8,448.70
  4. Step 4: Simplify right side
    20,127.10x = 255,193,405.94
  5. Step 5: Solve for x
    x = 255,193,405.94/20,127.10
  6. Step 6: Final answer
    x = 12,679.09

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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.