Home / 21,125.51-29,153.17-11,694.07

Finding the Fourth Proportional to 21,125.51, 29,153.17 and 11,694.07

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Solution

The fourth proportional to 21,125.51, 29,153.17 and 11,694.07 is: 16,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.51 : 29,153.17 = 11,694.07 : x
  2. Step 2: Convert to fraction form
    21,125.51/29,153.17 = 11,694.07/x
  3. Step 3: Cross multiply
    21,125.51x = 29,153.17 × 11,694.07
  4. Step 4: Simplify right side
    21,125.51x = 340,919,195.98
  5. Step 5: Solve for x
    x = 340,919,195.98/21,125.51
  6. Step 6: Final answer
    x = 16,137.80

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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.