Home / 20,106.13-30,177.80-10,252.75

Finding the Fourth Proportional to 20,106.13, 30,177.80 and 10,252.75

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Solution

The fourth proportional to 20,106.13, 30,177.80 and 10,252.75 is: 15,388.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.13 : 30,177.80 = 10,252.75 : x
  2. Step 2: Convert to fraction form
    20,106.13/30,177.80 = 10,252.75/x
  3. Step 3: Cross multiply
    20,106.13x = 30,177.80 × 10,252.75
  4. Step 4: Simplify right side
    20,106.13x = 309,405,438.95
  5. Step 5: Solve for x
    x = 309,405,438.95/20,106.13
  6. Step 6: Final answer
    x = 15,388.61

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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.