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Finding the Fourth Proportional to 13,776.64, 19,010.96 and 7,488.96

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Solution

The fourth proportional to 13,776.64, 19,010.96 and 7,488.96 is: 10,334.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.64 : 19,010.96 = 7,488.96 : x
  2. Step 2: Convert to fraction form
    13,776.64/19,010.96 = 7,488.96/x
  3. Step 3: Cross multiply
    13,776.64x = 19,010.96 × 7,488.96
  4. Step 4: Simplify right side
    13,776.64x = 142,372,319.00
  5. Step 5: Solve for x
    x = 142,372,319.00/13,776.64
  6. Step 6: Final answer
    x = 10,334.33

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.