Home / 21,127.23-29,156.36-11,696.00

Finding the Fourth Proportional to 21,127.23, 29,156.36 and 11,696.00

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Solution

The fourth proportional to 21,127.23, 29,156.36 and 11,696.00 is: 16,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.23 : 29,156.36 = 11,696.00 : x
  2. Step 2: Convert to fraction form
    21,127.23/29,156.36 = 11,696.00/x
  3. Step 3: Cross multiply
    21,127.23x = 29,156.36 × 11,696.00
  4. Step 4: Simplify right side
    21,127.23x = 341,012,582.30
  5. Step 5: Solve for x
    x = 341,012,582.30/21,127.23
  6. Step 6: Final answer
    x = 16,140.90

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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.