Home / 21,518.62-29,696.08-11,959.38

Finding the Fourth Proportional to 21,518.62, 29,696.08 and 11,959.38

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Solution

The fourth proportional to 21,518.62, 29,696.08 and 11,959.38 is: 16,504.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.62 : 29,696.08 = 11,959.38 : x
  2. Step 2: Convert to fraction form
    21,518.62/29,696.08 = 11,959.38/x
  3. Step 3: Cross multiply
    21,518.62x = 29,696.08 × 11,959.38
  4. Step 4: Simplify right side
    21,518.62x = 355,146,705.23
  5. Step 5: Solve for x
    x = 355,146,705.23/21,518.62
  6. Step 6: Final answer
    x = 16,504.16

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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.