Home / 15,738.06-21,718.36-8,664.34

Finding the Fourth Proportional to 15,738.06, 21,718.36 and 8,664.34

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Solution

The fourth proportional to 15,738.06, 21,718.36 and 8,664.34 is: 11,956.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,738.06 : 21,718.36 = 8,664.34 : x
  2. Step 2: Convert to fraction form
    15,738.06/21,718.36 = 8,664.34/x
  3. Step 3: Cross multiply
    15,738.06x = 21,718.36 × 8,664.34
  4. Step 4: Simplify right side
    15,738.06x = 188,175,255.28
  5. Step 5: Solve for x
    x = 188,175,255.28/15,738.06
  6. Step 6: Final answer
    x = 11,956.70

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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.