Home / 21,961.60-30,321.14-16,916.92

Finding the Fourth Proportional to 21,961.60, 30,321.14 and 16,916.92

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Solution

The fourth proportional to 21,961.60, 30,321.14 and 16,916.92 is: 23,356.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.60 : 30,321.14 = 16,916.92 : x
  2. Step 2: Convert to fraction form
    21,961.60/30,321.14 = 16,916.92/x
  3. Step 3: Cross multiply
    21,961.60x = 30,321.14 × 16,916.92
  4. Step 4: Simplify right side
    21,961.60x = 512,940,139.30
  5. Step 5: Solve for x
    x = 512,940,139.30/21,961.60
  6. Step 6: Final answer
    x = 23,356.23

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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.