Home / 21,127.77-29,156.27-11,696.33

Finding the Fourth Proportional to 21,127.77, 29,156.27 and 11,696.33

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Solution

The fourth proportional to 21,127.77, 29,156.27 and 11,696.33 is: 16,140.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.77 : 29,156.27 = 11,696.33 : x
  2. Step 2: Convert to fraction form
    21,127.77/29,156.27 = 11,696.33/x
  3. Step 3: Cross multiply
    21,127.77x = 29,156.27 × 11,696.33
  4. Step 4: Simplify right side
    21,127.77x = 341,021,369.90
  5. Step 5: Solve for x
    x = 341,021,369.90/21,127.77
  6. Step 6: Final answer
    x = 16,140.91

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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.