Home / 18,979.39-28,469.13-5,831.74

Finding the Fourth Proportional to 18,979.39, 28,469.13 and 5,831.74

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Solution

The fourth proportional to 18,979.39, 28,469.13 and 5,831.74 is: 8,747.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.39 : 28,469.13 = 5,831.74 : x
  2. Step 2: Convert to fraction form
    18,979.39/28,469.13 = 5,831.74/x
  3. Step 3: Cross multiply
    18,979.39x = 28,469.13 × 5,831.74
  4. Step 4: Simplify right side
    18,979.39x = 166,024,421.84
  5. Step 5: Solve for x
    x = 166,024,421.84/18,979.39
  6. Step 6: Final answer
    x = 8,747.62

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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.