Home / 20,216.20-30,335.10-9,124.60

Finding the Fourth Proportional to 20,216.20, 30,335.10 and 9,124.60

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Solution

The fourth proportional to 20,216.20, 30,335.10 and 9,124.60 is: 13,691.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.20 : 30,335.10 = 9,124.60 : x
  2. Step 2: Convert to fraction form
    20,216.20/30,335.10 = 9,124.60/x
  3. Step 3: Cross multiply
    20,216.20x = 30,335.10 × 9,124.60
  4. Step 4: Simplify right side
    20,216.20x = 276,795,653.46
  5. Step 5: Solve for x
    x = 276,795,653.46/20,216.20
  6. Step 6: Final answer
    x = 13,691.77

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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.