Home / 21,177.09-29,224.78-11,617.47

Finding the Fourth Proportional to 21,177.09, 29,224.78 and 11,617.47

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Solution

The fourth proportional to 21,177.09, 29,224.78 and 11,617.47 is: 16,032.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.09 : 29,224.78 = 11,617.47 : x
  2. Step 2: Convert to fraction form
    21,177.09/29,224.78 = 11,617.47/x
  3. Step 3: Cross multiply
    21,177.09x = 29,224.78 × 11,617.47
  4. Step 4: Simplify right side
    21,177.09x = 339,517,893.67
  5. Step 5: Solve for x
    x = 339,517,893.67/21,177.09
  6. Step 6: Final answer
    x = 16,032.32

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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.