Home / 31,356.80-47,039.04-13,831.04

Finding the Fourth Proportional to 31,356.80, 47,039.04 and 13,831.04

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Solution

The fourth proportional to 31,356.80, 47,039.04 and 13,831.04 is: 20,748.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,356.80 : 47,039.04 = 13,831.04 : x
  2. Step 2: Convert to fraction form
    31,356.80/47,039.04 = 13,831.04/x
  3. Step 3: Cross multiply
    31,356.80x = 47,039.04 × 13,831.04
  4. Step 4: Simplify right side
    31,356.80x = 650,598,843.80
  5. Step 5: Solve for x
    x = 650,598,843.80/31,356.80
  6. Step 6: Final answer
    x = 20,748.25

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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.