Home / 21,201.78-29,256.27-12,252.15

Finding the Fourth Proportional to 21,201.78, 29,256.27 and 12,252.15

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Solution

The fourth proportional to 21,201.78, 29,256.27 and 12,252.15 is: 16,906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.78 : 29,256.27 = 12,252.15 : x
  2. Step 2: Convert to fraction form
    21,201.78/29,256.27 = 12,252.15/x
  3. Step 3: Cross multiply
    21,201.78x = 29,256.27 × 12,252.15
  4. Step 4: Simplify right side
    21,201.78x = 358,452,208.48
  5. Step 5: Solve for x
    x = 358,452,208.48/21,201.78
  6. Step 6: Final answer
    x = 16,906.70

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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.