Home / 39,831.95-54,969.66-21,928.62

Finding the Fourth Proportional to 39,831.95, 54,969.66 and 21,928.62

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Solution

The fourth proportional to 39,831.95, 54,969.66 and 21,928.62 is: 30,262.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,831.95 : 54,969.66 = 21,928.62 : x
  2. Step 2: Convert to fraction form
    39,831.95/54,969.66 = 21,928.62/x
  3. Step 3: Cross multiply
    39,831.95x = 54,969.66 × 21,928.62
  4. Step 4: Simplify right side
    39,831.95x = 1,205,408,991.81
  5. Step 5: Solve for x
    x = 1,205,408,991.81/39,831.95
  6. Step 6: Final answer
    x = 30,262.36

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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.