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Finding the Fourth Proportional to 14,992.69, 20,691.73 and 8,705.07

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Solution

The fourth proportional to 14,992.69, 20,691.73 and 8,705.07 is: 12,014.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,992.69 : 20,691.73 = 8,705.07 : x
  2. Step 2: Convert to fraction form
    14,992.69/20,691.73 = 8,705.07/x
  3. Step 3: Cross multiply
    14,992.69x = 20,691.73 × 8,705.07
  4. Step 4: Simplify right side
    14,992.69x = 180,122,958.07
  5. Step 5: Solve for x
    x = 180,122,958.07/14,992.69
  6. Step 6: Final answer
    x = 12,014.05

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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.