Home / 20,220.55-30,336.74-10,366.69

Finding the Fourth Proportional to 20,220.55, 30,336.74 and 10,366.69

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Solution

The fourth proportional to 20,220.55, 30,336.74 and 10,366.69 is: 15,553.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.55 : 30,336.74 = 10,366.69 : x
  2. Step 2: Convert to fraction form
    20,220.55/30,336.74 = 10,366.69/x
  3. Step 3: Cross multiply
    20,220.55x = 30,336.74 × 10,366.69
  4. Step 4: Simplify right side
    20,220.55x = 314,491,579.19
  5. Step 5: Solve for x
    x = 314,491,579.19/20,220.55
  6. Step 6: Final answer
    x = 15,553.07

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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.