Home / 21,141.93-29,181.11-12,194.81

Finding the Fourth Proportional to 21,141.93, 29,181.11 and 12,194.81

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Solution

The fourth proportional to 21,141.93, 29,181.11 and 12,194.81 is: 16,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.93 : 29,181.11 = 12,194.81 : x
  2. Step 2: Convert to fraction form
    21,141.93/29,181.11 = 12,194.81/x
  3. Step 3: Cross multiply
    21,141.93x = 29,181.11 × 12,194.81
  4. Step 4: Simplify right side
    21,141.93x = 355,857,885.16
  5. Step 5: Solve for x
    x = 355,857,885.16/21,141.93
  6. Step 6: Final answer
    x = 16,831.85

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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.