Home / 20,831.42-28,746.68-11,881.82

Finding the Fourth Proportional to 20,831.42, 28,746.68 and 11,881.82

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Solution

The fourth proportional to 20,831.42, 28,746.68 and 11,881.82 is: 16,396.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.42 : 28,746.68 = 11,881.82 : x
  2. Step 2: Convert to fraction form
    20,831.42/28,746.68 = 11,881.82/x
  3. Step 3: Cross multiply
    20,831.42x = 28,746.68 × 11,881.82
  4. Step 4: Simplify right side
    20,831.42x = 341,562,889.82
  5. Step 5: Solve for x
    x = 341,562,889.82/20,831.42
  6. Step 6: Final answer
    x = 16,396.52

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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.