Home / 21,127.53-29,156.00-11,696.09

Finding the Fourth Proportional to 21,127.53, 29,156.00 and 11,696.09

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Solution

The fourth proportional to 21,127.53, 29,156.00 and 11,696.09 is: 16,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.53 : 29,156.00 = 11,696.09 : x
  2. Step 2: Convert to fraction form
    21,127.53/29,156.00 = 11,696.09/x
  3. Step 3: Cross multiply
    21,127.53x = 29,156.00 × 11,696.09
  4. Step 4: Simplify right side
    21,127.53x = 341,010,995.78
  5. Step 5: Solve for x
    x = 341,010,995.78/21,127.53
  6. Step 6: Final answer
    x = 16,140.60

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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.