Home / 20,627.52-30,942.32-10,107.20

Finding the Fourth Proportional to 20,627.52, 30,942.32 and 10,107.20

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Solution

The fourth proportional to 20,627.52, 30,942.32 and 10,107.20 is: 15,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.52 : 30,942.32 = 10,107.20 : x
  2. Step 2: Convert to fraction form
    20,627.52/30,942.32 = 10,107.20/x
  3. Step 3: Cross multiply
    20,627.52x = 30,942.32 × 10,107.20
  4. Step 4: Simplify right side
    20,627.52x = 312,740,216.70
  5. Step 5: Solve for x
    x = 312,740,216.70/20,627.52
  6. Step 6: Final answer
    x = 15,161.31

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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.