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Finding the Fourth Proportional to 14,992.88, 20,691.99 and 8,705.25

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Solution

The fourth proportional to 14,992.88, 20,691.99 and 8,705.25 is: 12,014.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,992.88 : 20,691.99 = 8,705.25 : x
  2. Step 2: Convert to fraction form
    14,992.88/20,691.99 = 8,705.25/x
  3. Step 3: Cross multiply
    14,992.88x = 20,691.99 × 8,705.25
  4. Step 4: Simplify right side
    14,992.88x = 180,128,945.95
  5. Step 5: Solve for x
    x = 180,128,945.95/14,992.88
  6. Step 6: Final answer
    x = 12,014.30

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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.