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Finding the Fourth Proportional to 25,991.50, 38,992.05 and 8,226.63

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Solution

The fourth proportional to 25,991.50, 38,992.05 and 8,226.63 is: 12,341.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,991.50 : 38,992.05 = 8,226.63 : x
  2. Step 2: Convert to fraction form
    25,991.50/38,992.05 = 8,226.63/x
  3. Step 3: Cross multiply
    25,991.50x = 38,992.05 × 8,226.63
  4. Step 4: Simplify right side
    25,991.50x = 320,773,168.29
  5. Step 5: Solve for x
    x = 320,773,168.29/25,991.50
  6. Step 6: Final answer
    x = 12,341.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.