Home / 15,738.08-21,718.08-8,664.48

Finding the Fourth Proportional to 15,738.08, 21,718.08 and 8,664.48

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Solution

The fourth proportional to 15,738.08, 21,718.08 and 8,664.48 is: 11,956.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,738.08 : 21,718.08 = 8,664.48 : x
  2. Step 2: Convert to fraction form
    15,738.08/21,718.08 = 8,664.48/x
  3. Step 3: Cross multiply
    15,738.08x = 21,718.08 × 8,664.48
  4. Step 4: Simplify right side
    15,738.08x = 188,175,869.80
  5. Step 5: Solve for x
    x = 188,175,869.80/15,738.08
  6. Step 6: Final answer
    x = 11,956.72

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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.