Home / 39,735.56-54,836.06-21,831.72

Finding the Fourth Proportional to 39,735.56, 54,836.06 and 21,831.72

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Solution

The fourth proportional to 39,735.56, 54,836.06 and 21,831.72 is: 30,128.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,735.56 : 54,836.06 = 21,831.72 : x
  2. Step 2: Convert to fraction form
    39,735.56/54,836.06 = 21,831.72/x
  3. Step 3: Cross multiply
    39,735.56x = 54,836.06 × 21,831.72
  4. Step 4: Simplify right side
    39,735.56x = 1,197,165,398.66
  5. Step 5: Solve for x
    x = 1,197,165,398.66/39,735.56
  6. Step 6: Final answer
    x = 30,128.32

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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.