Home / 20,100.30-27,738.03-12,140.70

Finding the Fourth Proportional to 20,100.30, 27,738.03 and 12,140.70

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Solution

The fourth proportional to 20,100.30, 27,738.03 and 12,140.70 is: 16,753.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.30 : 27,738.03 = 12,140.70 : x
  2. Step 2: Convert to fraction form
    20,100.30/27,738.03 = 12,140.70/x
  3. Step 3: Cross multiply
    20,100.30x = 27,738.03 × 12,140.70
  4. Step 4: Simplify right side
    20,100.30x = 336,759,100.82
  5. Step 5: Solve for x
    x = 336,759,100.82/20,100.30
  6. Step 6: Final answer
    x = 16,753.93

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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.