Home / 21,295.91-29,391.19-12,224.86

Finding the Fourth Proportional to 21,295.91, 29,391.19 and 12,224.86

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Solution

The fourth proportional to 21,295.91, 29,391.19 and 12,224.86 is: 16,871.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295.91 : 29,391.19 = 12,224.86 : x
  2. Step 2: Convert to fraction form
    21,295.91/29,391.19 = 12,224.86/x
  3. Step 3: Cross multiply
    21,295.91x = 29,391.19 × 12,224.86
  4. Step 4: Simplify right side
    21,295.91x = 359,303,078.94
  5. Step 5: Solve for x
    x = 359,303,078.94/21,295.91
  6. Step 6: Final answer
    x = 16,871.93

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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.