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Finding the Fourth Proportional to 39,008.25, 53,831.25 and 21,103.27

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Solution

The fourth proportional to 39,008.25, 53,831.25 and 21,103.27 is: 29,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,008.25 : 53,831.25 = 21,103.27 : x
  2. Step 2: Convert to fraction form
    39,008.25/53,831.25 = 21,103.27/x
  3. Step 3: Cross multiply
    39,008.25x = 53,831.25 × 21,103.27
  4. Step 4: Simplify right side
    39,008.25x = 1,136,015,268.61
  5. Step 5: Solve for x
    x = 1,136,015,268.61/39,008.25
  6. Step 6: Final answer
    x = 29,122.44

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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.