Home / 20,106.78-27,746.70-12,147.62

Finding the Fourth Proportional to 20,106.78, 27,746.70 and 12,147.62

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Solution

The fourth proportional to 20,106.78, 27,746.70 and 12,147.62 is: 16,763.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.78 : 27,746.70 = 12,147.62 : x
  2. Step 2: Convert to fraction form
    20,106.78/27,746.70 = 12,147.62/x
  3. Step 3: Cross multiply
    20,106.78x = 27,746.70 × 12,147.62
  4. Step 4: Simplify right side
    20,106.78x = 337,056,367.85
  5. Step 5: Solve for x
    x = 337,056,367.85/20,106.78
  6. Step 6: Final answer
    x = 16,763.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.