Home / 21,682.02-29,921.64-12,250.80

Finding the Fourth Proportional to 21,682.02, 29,921.64 and 12,250.80

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Solution

The fourth proportional to 21,682.02, 29,921.64 and 12,250.80 is: 16,906.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,682.02 : 29,921.64 = 12,250.80 : x
  2. Step 2: Convert to fraction form
    21,682.02/29,921.64 = 12,250.80/x
  3. Step 3: Cross multiply
    21,682.02x = 29,921.64 × 12,250.80
  4. Step 4: Simplify right side
    21,682.02x = 366,564,027.31
  5. Step 5: Solve for x
    x = 366,564,027.31/21,682.02
  6. Step 6: Final answer
    x = 16,906.36

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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.