Home / 39,831.90-54,968.04-21,927.60

Finding the Fourth Proportional to 39,831.90, 54,968.04 and 21,927.60

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Solution

The fourth proportional to 39,831.90, 54,968.04 and 21,927.60 is: 30,260.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,831.90 : 54,968.04 = 21,927.60 : x
  2. Step 2: Convert to fraction form
    39,831.90/54,968.04 = 21,927.60/x
  3. Step 3: Cross multiply
    39,831.90x = 54,968.04 × 21,927.60
  4. Step 4: Simplify right side
    39,831.90x = 1,205,317,193.90
  5. Step 5: Solve for x
    x = 1,205,317,193.90/39,831.90
  6. Step 6: Final answer
    x = 30,260.10

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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.