Home / 21,083.26-29,097.82-12,130.60

Finding the Fourth Proportional to 21,083.26, 29,097.82 and 12,130.60

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Solution

The fourth proportional to 21,083.26, 29,097.82 and 12,130.60 is: 16,741.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,083.26 : 29,097.82 = 12,130.60 : x
  2. Step 2: Convert to fraction form
    21,083.26/29,097.82 = 12,130.60/x
  3. Step 3: Cross multiply
    21,083.26x = 29,097.82 × 12,130.60
  4. Step 4: Simplify right side
    21,083.26x = 352,974,015.29
  5. Step 5: Solve for x
    x = 352,974,015.29/21,083.26
  6. Step 6: Final answer
    x = 16,741.91

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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.