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Finding the Fourth Proportional to 28,919, 43,396.32 and 13,337.84

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Solution

The fourth proportional to 28,919, 43,396.32 and 13,337.84 is: 20,014.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919 : 43,396.32 = 13,337.84 : x
  2. Step 2: Convert to fraction form
    28,919/43,396.32 = 13,337.84/x
  3. Step 3: Cross multiply
    28,919x = 43,396.32 × 13,337.84
  4. Step 4: Simplify right side
    28,919x = 578,813,172.75
  5. Step 5: Solve for x
    x = 578,813,172.75/28,919
  6. Step 6: Final answer
    x = 20,014.98

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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.