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Finding the Fourth Proportional to 19,235.40, 28,861.20 and 9,369.60

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Solution

The fourth proportional to 19,235.40, 28,861.20 and 9,369.60 is: 14,058.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,235.40 : 28,861.20 = 9,369.60 : x
  2. Step 2: Convert to fraction form
    19,235.40/28,861.20 = 9,369.60/x
  3. Step 3: Cross multiply
    19,235.40x = 28,861.20 × 9,369.60
  4. Step 4: Simplify right side
    19,235.40x = 270,417,899.52
  5. Step 5: Solve for x
    x = 270,417,899.52/19,235.40
  6. Step 6: Final answer
    x = 14,058.35

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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.