Home / 39,220.80-58,831.20-20,788.80

Finding the Fourth Proportional to 39,220.80, 58,831.20 and 20,788.80

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Solution

The fourth proportional to 39,220.80, 58,831.20 and 20,788.80 is: 31,183.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,220.80 : 58,831.20 = 20,788.80 : x
  2. Step 2: Convert to fraction form
    39,220.80/58,831.20 = 20,788.80/x
  3. Step 3: Cross multiply
    39,220.80x = 58,831.20 × 20,788.80
  4. Step 4: Simplify right side
    39,220.80x = 1,223,030,050.56
  5. Step 5: Solve for x
    x = 1,223,030,050.56/39,220.80
  6. Step 6: Final answer
    x = 31,183.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.