Home / 21,146.78-29,182.54-12,194.15

Finding the Fourth Proportional to 21,146.78, 29,182.54 and 12,194.15

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Solution

The fourth proportional to 21,146.78, 29,182.54 and 12,194.15 is: 16,827.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.78 : 29,182.54 = 12,194.15 : x
  2. Step 2: Convert to fraction form
    21,146.78/29,182.54 = 12,194.15/x
  3. Step 3: Cross multiply
    21,146.78x = 29,182.54 × 12,194.15
  4. Step 4: Simplify right side
    21,146.78x = 355,856,203.18
  5. Step 5: Solve for x
    x = 355,856,203.18/21,146.78
  6. Step 6: Final answer
    x = 16,827.92

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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.