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Finding the Fourth Proportional to 20,479.52, 30,719.07 and 9,383.06

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Solution

The fourth proportional to 20,479.52, 30,719.07 and 9,383.06 is: 14,074.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.52 : 30,719.07 = 9,383.06 : x
  2. Step 2: Convert to fraction form
    20,479.52/30,719.07 = 9,383.06/x
  3. Step 3: Cross multiply
    20,479.52x = 30,719.07 × 9,383.06
  4. Step 4: Simplify right side
    20,479.52x = 288,238,723.36
  5. Step 5: Solve for x
    x = 288,238,723.36/20,479.52
  6. Step 6: Final answer
    x = 14,074.49

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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.