Home / 21,125.34-29,151.90-11,694.51

Finding the Fourth Proportional to 21,125.34, 29,151.90 and 11,694.51

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Solution

The fourth proportional to 21,125.34, 29,151.90 and 11,694.51 is: 16,137.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.34 : 29,151.90 = 11,694.51 : x
  2. Step 2: Convert to fraction form
    21,125.34/29,151.90 = 11,694.51/x
  3. Step 3: Cross multiply
    21,125.34x = 29,151.90 × 11,694.51
  4. Step 4: Simplify right side
    21,125.34x = 340,917,186.07
  5. Step 5: Solve for x
    x = 340,917,186.07/21,125.34
  6. Step 6: Final answer
    x = 16,137.83

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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.