Home / 15,722.44-21,696.84-8,648.72

Finding the Fourth Proportional to 15,722.44, 21,696.84 and 8,648.72

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Solution

The fourth proportional to 15,722.44, 21,696.84 and 8,648.72 is: 11,935.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.44 : 21,696.84 = 8,648.72 : x
  2. Step 2: Convert to fraction form
    15,722.44/21,696.84 = 8,648.72/x
  3. Step 3: Cross multiply
    15,722.44x = 21,696.84 × 8,648.72
  4. Step 4: Simplify right side
    15,722.44x = 187,649,894.04
  5. Step 5: Solve for x
    x = 187,649,894.04/15,722.44
  6. Step 6: Final answer
    x = 11,935.16

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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.