Home / 15,746.21-21,728.97-8,672.48

Finding the Fourth Proportional to 15,746.21, 21,728.97 and 8,672.48

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Solution

The fourth proportional to 15,746.21, 21,728.97 and 8,672.48 is: 11,967.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.21 : 21,728.97 = 8,672.48 : x
  2. Step 2: Convert to fraction form
    15,746.21/21,728.97 = 8,672.48/x
  3. Step 3: Cross multiply
    15,746.21x = 21,728.97 × 8,672.48
  4. Step 4: Simplify right side
    15,746.21x = 188,444,057.75
  5. Step 5: Solve for x
    x = 188,444,057.75/15,746.21
  6. Step 6: Final answer
    x = 11,967.58

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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.