Home / 20,165.83-27,831.75-12,099.85

Finding the Fourth Proportional to 20,165.83, 27,831.75 and 12,099.85

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Solution

The fourth proportional to 20,165.83, 27,831.75 and 12,099.85 is: 16,699.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.83 : 27,831.75 = 12,099.85 : x
  2. Step 2: Convert to fraction form
    20,165.83/27,831.75 = 12,099.85/x
  3. Step 3: Cross multiply
    20,165.83x = 27,831.75 × 12,099.85
  4. Step 4: Simplify right side
    20,165.83x = 336,759,953.35
  5. Step 5: Solve for x
    x = 336,759,953.35/20,165.83
  6. Step 6: Final answer
    x = 16,699.54

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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.