Home / 20,623.11-30,930.79-5,831.92

Finding the Fourth Proportional to 20,623.11, 30,930.79 and 5,831.92

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Solution

The fourth proportional to 20,623.11, 30,930.79 and 5,831.92 is: 8,746.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.11 : 30,930.79 = 5,831.92 : x
  2. Step 2: Convert to fraction form
    20,623.11/30,930.79 = 5,831.92/x
  3. Step 3: Cross multiply
    20,623.11x = 30,930.79 × 5,831.92
  4. Step 4: Simplify right side
    20,623.11x = 180,385,892.82
  5. Step 5: Solve for x
    x = 180,385,892.82/20,623.11
  6. Step 6: Final answer
    x = 8,746.78

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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.