Home / 20,831.44-28,752.20-12,767.52

Finding the Fourth Proportional to 20,831.44, 28,752.20 and 12,767.52

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Solution

The fourth proportional to 20,831.44, 28,752.20 and 12,767.52 is: 17,622.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.44 : 28,752.20 = 12,767.52 : x
  2. Step 2: Convert to fraction form
    20,831.44/28,752.20 = 12,767.52/x
  3. Step 3: Cross multiply
    20,831.44x = 28,752.20 × 12,767.52
  4. Step 4: Simplify right side
    20,831.44x = 367,094,288.54
  5. Step 5: Solve for x
    x = 367,094,288.54/20,831.44
  6. Step 6: Final answer
    x = 17,622.13

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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.