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Finding the Fourth Proportional to 14,992.01, 20,689.78 and 8,277.61

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Solution

The fourth proportional to 14,992.01, 20,689.78 and 8,277.61 is: 11,423.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,992.01 : 20,689.78 = 8,277.61 : x
  2. Step 2: Convert to fraction form
    14,992.01/20,689.78 = 8,277.61/x
  3. Step 3: Cross multiply
    14,992.01x = 20,689.78 × 8,277.61
  4. Step 4: Simplify right side
    14,992.01x = 171,261,888.44
  5. Step 5: Solve for x
    x = 171,261,888.44/14,992.01
  6. Step 6: Final answer
    x = 11,423.55

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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.