Home / 18,917.43-26,082.92-11,831.55

Finding the Fourth Proportional to 18,917.43, 26,082.92 and 11,831.55

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Solution

The fourth proportional to 18,917.43, 26,082.92 and 11,831.55 is: 16,313.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917.43 : 26,082.92 = 11,831.55 : x
  2. Step 2: Convert to fraction form
    18,917.43/26,082.92 = 11,831.55/x
  3. Step 3: Cross multiply
    18,917.43x = 26,082.92 × 11,831.55
  4. Step 4: Simplify right side
    18,917.43x = 308,601,372.13
  5. Step 5: Solve for x
    x = 308,601,372.13/18,917.43
  6. Step 6: Final answer
    x = 16,313.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.