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Finding the Fourth Proportional to 28,614.30, 42,919.05 and 8,892.54

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Solution

The fourth proportional to 28,614.30, 42,919.05 and 8,892.54 is: 13,338.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,614.30 : 42,919.05 = 8,892.54 : x
  2. Step 2: Convert to fraction form
    28,614.30/42,919.05 = 8,892.54/x
  3. Step 3: Cross multiply
    28,614.30x = 42,919.05 × 8,892.54
  4. Step 4: Simplify right side
    28,614.30x = 381,659,368.89
  5. Step 5: Solve for x
    x = 381,659,368.89/28,614.30
  6. Step 6: Final answer
    x = 13,338.06

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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.