Home / 20,153.83-27,814.54-12,195.89

Finding the Fourth Proportional to 20,153.83, 27,814.54 and 12,195.89

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Solution

The fourth proportional to 20,153.83, 27,814.54 and 12,195.89 is: 16,831.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.83 : 27,814.54 = 12,195.89 : x
  2. Step 2: Convert to fraction form
    20,153.83/27,814.54 = 12,195.89/x
  3. Step 3: Cross multiply
    20,153.83x = 27,814.54 × 12,195.89
  4. Step 4: Simplify right side
    20,153.83x = 339,222,931.17
  5. Step 5: Solve for x
    x = 339,222,931.17/20,153.83
  6. Step 6: Final answer
    x = 16,831.69

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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.