Home / 39,735.86-54,835.85-21,831.23

Finding the Fourth Proportional to 39,735.86, 54,835.85 and 21,831.23

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Solution

The fourth proportional to 39,735.86, 54,835.85 and 21,831.23 is: 30,127.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,735.86 : 54,835.85 = 21,831.23 : x
  2. Step 2: Convert to fraction form
    39,735.86/54,835.85 = 21,831.23/x
  3. Step 3: Cross multiply
    39,735.86x = 54,835.85 × 21,831.23
  4. Step 4: Simplify right side
    39,735.86x = 1,197,134,245.26
  5. Step 5: Solve for x
    x = 1,197,134,245.26/39,735.86
  6. Step 6: Final answer
    x = 30,127.31

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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.