Home / 20,106.56-27,745.80-12,144.08

Finding the Fourth Proportional to 20,106.56, 27,745.80 and 12,144.08

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Solution

The fourth proportional to 20,106.56, 27,745.80 and 12,144.08 is: 16,758.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.56 : 27,745.80 = 12,144.08 : x
  2. Step 2: Convert to fraction form
    20,106.56/27,745.80 = 12,144.08/x
  3. Step 3: Cross multiply
    20,106.56x = 27,745.80 × 12,144.08
  4. Step 4: Simplify right side
    20,106.56x = 336,947,214.86
  5. Step 5: Solve for x
    x = 336,947,214.86/20,106.56
  6. Step 6: Final answer
    x = 16,758.07

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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.