Home / 21,255.78-29,333.67-11,696.76

Finding the Fourth Proportional to 21,255.78, 29,333.67 and 11,696.76

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Solution

The fourth proportional to 21,255.78, 29,333.67 and 11,696.76 is: 16,141.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.78 : 29,333.67 = 11,696.76 : x
  2. Step 2: Convert to fraction form
    21,255.78/29,333.67 = 11,696.76/x
  3. Step 3: Cross multiply
    21,255.78x = 29,333.67 × 11,696.76
  4. Step 4: Simplify right side
    21,255.78x = 343,108,897.91
  5. Step 5: Solve for x
    x = 343,108,897.91/21,255.78
  6. Step 6: Final answer
    x = 16,141.91

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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.