Home / 20,378.55-30,576.63-11,025.15

Finding the Fourth Proportional to 20,378.55, 30,576.63 and 11,025.15

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Solution

The fourth proportional to 20,378.55, 30,576.63 and 11,025.15 is: 16,542.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.55 : 30,576.63 = 11,025.15 : x
  2. Step 2: Convert to fraction form
    20,378.55/30,576.63 = 11,025.15/x
  3. Step 3: Cross multiply
    20,378.55x = 30,576.63 × 11,025.15
  4. Step 4: Simplify right side
    20,378.55x = 337,111,932.24
  5. Step 5: Solve for x
    x = 337,111,932.24/20,378.55
  6. Step 6: Final answer
    x = 16,542.49

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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.