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Finding the Fourth Proportional to 14,921.55, 20,592.09 and 8,207.55

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Solution

The fourth proportional to 14,921.55, 20,592.09 and 8,207.55 is: 11,326.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,921.55 : 20,592.09 = 8,207.55 : x
  2. Step 2: Convert to fraction form
    14,921.55/20,592.09 = 8,207.55/x
  3. Step 3: Cross multiply
    14,921.55x = 20,592.09 × 8,207.55
  4. Step 4: Simplify right side
    14,921.55x = 169,010,608.28
  5. Step 5: Solve for x
    x = 169,010,608.28/14,921.55
  6. Step 6: Final answer
    x = 11,326.61

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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.