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Finding the Fourth Proportional to 15,673.42, 21,627.97 and 8,957.71

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Solution

The fourth proportional to 15,673.42, 21,627.97 and 8,957.71 is: 12,360.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.42 : 21,627.97 = 8,957.71 : x
  2. Step 2: Convert to fraction form
    15,673.42/21,627.97 = 8,957.71/x
  3. Step 3: Cross multiply
    15,673.42x = 21,627.97 × 8,957.71
  4. Step 4: Simplify right side
    15,673.42x = 193,737,083.15
  5. Step 5: Solve for x
    x = 193,737,083.15/15,673.42
  6. Step 6: Final answer
    x = 12,360.87

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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.