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Finding the Fourth Proportional to 28,181.40, 38,889.30 and 16,245.24

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Solution

The fourth proportional to 28,181.40, 38,889.30 and 16,245.24 is: 22,417.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.40 : 38,889.30 = 16,245.24 : x
  2. Step 2: Convert to fraction form
    28,181.40/38,889.30 = 16,245.24/x
  3. Step 3: Cross multiply
    28,181.40x = 38,889.30 × 16,245.24
  4. Step 4: Simplify right side
    28,181.40x = 631,766,011.93
  5. Step 5: Solve for x
    x = 631,766,011.93/28,181.40
  6. Step 6: Final answer
    x = 22,417.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.