Home / 21,389.06-29,517.01-11,959.45

Finding the Fourth Proportional to 21,389.06, 29,517.01 and 11,959.45

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Solution

The fourth proportional to 21,389.06, 29,517.01 and 11,959.45 is: 16,504.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.06 : 29,517.01 = 11,959.45 : x
  2. Step 2: Convert to fraction form
    21,389.06/29,517.01 = 11,959.45/x
  3. Step 3: Cross multiply
    21,389.06x = 29,517.01 × 11,959.45
  4. Step 4: Simplify right side
    21,389.06x = 353,007,101.55
  5. Step 5: Solve for x
    x = 353,007,101.55/21,389.06
  6. Step 6: Final answer
    x = 16,504.09

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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.