Home / 15,735.44-21,714.74-8,661.72

Finding the Fourth Proportional to 15,735.44, 21,714.74 and 8,661.72

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Solution

The fourth proportional to 15,735.44, 21,714.74 and 8,661.72 is: 11,953.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,735.44 : 21,714.74 = 8,661.72 : x
  2. Step 2: Convert to fraction form
    15,735.44/21,714.74 = 8,661.72/x
  3. Step 3: Cross multiply
    15,735.44x = 21,714.74 × 8,661.72
  4. Step 4: Simplify right side
    15,735.44x = 188,086,997.75
  5. Step 5: Solve for x
    x = 188,086,997.75/15,735.44
  6. Step 6: Final answer
    x = 11,953.08

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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.