Home / 20,442.57-30,636.54-10,935.39

Finding the Fourth Proportional to 20,442.57, 30,636.54 and 10,935.39

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Solution

The fourth proportional to 20,442.57, 30,636.54 and 10,935.39 is: 16,388.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.57 : 30,636.54 = 10,935.39 : x
  2. Step 2: Convert to fraction form
    20,442.57/30,636.54 = 10,935.39/x
  3. Step 3: Cross multiply
    20,442.57x = 30,636.54 × 10,935.39
  4. Step 4: Simplify right side
    20,442.57x = 335,022,513.15
  5. Step 5: Solve for x
    x = 335,022,513.15/20,442.57
  6. Step 6: Final answer
    x = 16,388.47

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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.