Home / 21,203.73-29,260-11,771.68

Finding the Fourth Proportional to 21,203.73, 29,260 and 11,771.68

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Solution

The fourth proportional to 21,203.73, 29,260 and 11,771.68 is: 16,244.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.73 : 29,260 = 11,771.68 : x
  2. Step 2: Convert to fraction form
    21,203.73/29,260 = 11,771.68/x
  3. Step 3: Cross multiply
    21,203.73x = 29,260 × 11,771.68
  4. Step 4: Simplify right side
    21,203.73x = 344,439,356.80
  5. Step 5: Solve for x
    x = 344,439,356.80/21,203.73
  6. Step 6: Final answer
    x = 16,244.29

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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.