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Finding the Fourth Proportional to 15,672.74, 21,627.56 and 8,957.48

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Solution

The fourth proportional to 15,672.74, 21,627.56 and 8,957.48 is: 12,360.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672.74 : 21,627.56 = 8,957.48 : x
  2. Step 2: Convert to fraction form
    15,672.74/21,627.56 = 8,957.48/x
  3. Step 3: Cross multiply
    15,672.74x = 21,627.56 × 8,957.48
  4. Step 4: Simplify right side
    15,672.74x = 193,728,391.36
  5. Step 5: Solve for x
    x = 193,728,391.36/15,672.74
  6. Step 6: Final answer
    x = 12,360.85

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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.