Home / 39,736.62-54,835.92-21,831.30

Finding the Fourth Proportional to 39,736.62, 54,835.92 and 21,831.30

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Solution

The fourth proportional to 39,736.62, 54,835.92 and 21,831.30 is: 30,126.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,736.62 : 54,835.92 = 21,831.30 : x
  2. Step 2: Convert to fraction form
    39,736.62/54,835.92 = 21,831.30/x
  3. Step 3: Cross multiply
    39,736.62x = 54,835.92 × 21,831.30
  4. Step 4: Simplify right side
    39,736.62x = 1,197,139,420.30
  5. Step 5: Solve for x
    x = 1,197,139,420.30/39,736.62
  6. Step 6: Final answer
    x = 30,126.86

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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.