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Finding the Fourth Proportional to 14,251.20, 21,349.60 and 7,675.20

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Solution

The fourth proportional to 14,251.20, 21,349.60 and 7,675.20 is: 11,498.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,251.20 : 21,349.60 = 7,675.20 : x
  2. Step 2: Convert to fraction form
    14,251.20/21,349.60 = 7,675.20/x
  3. Step 3: Cross multiply
    14,251.20x = 21,349.60 × 7,675.20
  4. Step 4: Simplify right side
    14,251.20x = 163,862,449.92
  5. Step 5: Solve for x
    x = 163,862,449.92/14,251.20
  6. Step 6: Final answer
    x = 11,498.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.