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Finding the Fourth Proportional to 15,073, 20,800.74 and 9,185

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Solution

The fourth proportional to 15,073, 20,800.74 and 9,185 is: 12,675.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,073 : 20,800.74 = 9,185 : x
  2. Step 2: Convert to fraction form
    15,073/20,800.74 = 9,185/x
  3. Step 3: Cross multiply
    15,073x = 20,800.74 × 9,185
  4. Step 4: Simplify right side
    15,073x = 191,054,796.90
  5. Step 5: Solve for x
    x = 191,054,796.90/15,073
  6. Step 6: Final answer
    x = 12,675.30

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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.