Home / 39,735.43-54,835.86-21,831.60

Finding the Fourth Proportional to 39,735.43, 54,835.86 and 21,831.60

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Solution

The fourth proportional to 39,735.43, 54,835.86 and 21,831.60 is: 30,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,735.43 : 54,835.86 = 21,831.60 : x
  2. Step 2: Convert to fraction form
    39,735.43/54,835.86 = 21,831.60/x
  3. Step 3: Cross multiply
    39,735.43x = 54,835.86 × 21,831.60
  4. Step 4: Simplify right side
    39,735.43x = 1,197,154,287.00
  5. Step 5: Solve for x
    x = 1,197,154,287.00/39,735.43
  6. Step 6: Final answer
    x = 30,128.13

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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.