Home / 20,141.39-30,230.52-10,287.57

Finding the Fourth Proportional to 20,141.39, 30,230.52 and 10,287.57

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Solution

The fourth proportional to 20,141.39, 30,230.52 and 10,287.57 is: 15,440.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.39 : 30,230.52 = 10,287.57 : x
  2. Step 2: Convert to fraction form
    20,141.39/30,230.52 = 10,287.57/x
  3. Step 3: Cross multiply
    20,141.39x = 30,230.52 × 10,287.57
  4. Step 4: Simplify right side
    20,141.39x = 310,998,590.64
  5. Step 5: Solve for x
    x = 310,998,590.64/20,141.39
  6. Step 6: Final answer
    x = 15,440.77

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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.