Home / 15,743.30-21,728.13-11,960.26

Finding the Fourth Proportional to 15,743.30, 21,728.13 and 11,960.26

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Solution

The fourth proportional to 15,743.30, 21,728.13 and 11,960.26 is: 16,506.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.30 : 21,728.13 = 11,960.26 : x
  2. Step 2: Convert to fraction form
    15,743.30/21,728.13 = 11,960.26/x
  3. Step 3: Cross multiply
    15,743.30x = 21,728.13 × 11,960.26
  4. Step 4: Simplify right side
    15,743.30x = 259,874,084.11
  5. Step 5: Solve for x
    x = 259,874,084.11/15,743.30
  6. Step 6: Final answer
    x = 16,506.96

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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.