Home / 39,735.75-54,836.29-21,831.91

Finding the Fourth Proportional to 39,735.75, 54,836.29 and 21,831.91

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Solution

The fourth proportional to 39,735.75, 54,836.29 and 21,831.91 is: 30,128.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,735.75 : 54,836.29 = 21,831.91 : x
  2. Step 2: Convert to fraction form
    39,735.75/54,836.29 = 21,831.91/x
  3. Step 3: Cross multiply
    39,735.75x = 54,836.29 × 21,831.91
  4. Step 4: Simplify right side
    39,735.75x = 1,197,180,948.01
  5. Step 5: Solve for x
    x = 1,197,180,948.01/39,735.75
  6. Step 6: Final answer
    x = 30,128.56

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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.