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Finding the Fourth Proportional to 18,994.88, 28,484.04 and 5,840

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Solution

The fourth proportional to 18,994.88, 28,484.04 and 5,840 is: 8,757.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.88 : 28,484.04 = 5,840 : x
  2. Step 2: Convert to fraction form
    18,994.88/28,484.04 = 5,840/x
  3. Step 3: Cross multiply
    18,994.88x = 28,484.04 × 5,840
  4. Step 4: Simplify right side
    18,994.88x = 166,346,793.60
  5. Step 5: Solve for x
    x = 166,346,793.60/18,994.88
  6. Step 6: Final answer
    x = 8,757.45

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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.