Home / 20,176.40-30,240.30-10,310.60

Finding the Fourth Proportional to 20,176.40, 30,240.30 and 10,310.60

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Solution

The fourth proportional to 20,176.40, 30,240.30 and 10,310.60 is: 15,453.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,176.40 : 30,240.30 = 10,310.60 : x
  2. Step 2: Convert to fraction form
    20,176.40/30,240.30 = 10,310.60/x
  3. Step 3: Cross multiply
    20,176.40x = 30,240.30 × 10,310.60
  4. Step 4: Simplify right side
    20,176.40x = 311,795,637.18
  5. Step 5: Solve for x
    x = 311,795,637.18/20,176.40
  6. Step 6: Final answer
    x = 15,453.48

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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.