Home / 21,175.86-29,222.10-11,615.58

Finding the Fourth Proportional to 21,175.86, 29,222.10 and 11,615.58

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Solution

The fourth proportional to 21,175.86, 29,222.10 and 11,615.58 is: 16,029.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.86 : 29,222.10 = 11,615.58 : x
  2. Step 2: Convert to fraction form
    21,175.86/29,222.10 = 11,615.58/x
  3. Step 3: Cross multiply
    21,175.86x = 29,222.10 × 11,615.58
  4. Step 4: Simplify right side
    21,175.86x = 339,431,640.32
  5. Step 5: Solve for x
    x = 339,431,640.32/21,175.86
  6. Step 6: Final answer
    x = 16,029.18

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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.