Home / 20,621.36-30,934.20-10,230.32

Finding the Fourth Proportional to 20,621.36, 30,934.20 and 10,230.32

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Solution

The fourth proportional to 20,621.36, 30,934.20 and 10,230.32 is: 15,346.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.36 : 30,934.20 = 10,230.32 : x
  2. Step 2: Convert to fraction form
    20,621.36/30,934.20 = 10,230.32/x
  3. Step 3: Cross multiply
    20,621.36x = 30,934.20 × 10,230.32
  4. Step 4: Simplify right side
    20,621.36x = 316,466,764.94
  5. Step 5: Solve for x
    x = 316,466,764.94/20,621.36
  6. Step 6: Final answer
    x = 15,346.55

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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.