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Finding the Fourth Proportional to 13,455.72, 20,176.64 and 6,053.88

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Solution

The fourth proportional to 13,455.72, 20,176.64 and 6,053.88 is: 9,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.72 : 20,176.64 = 6,053.88 : x
  2. Step 2: Convert to fraction form
    13,455.72/20,176.64 = 6,053.88/x
  3. Step 3: Cross multiply
    13,455.72x = 20,176.64 × 6,053.88
  4. Step 4: Simplify right side
    13,455.72x = 122,146,957.36
  5. Step 5: Solve for x
    x = 122,146,957.36/13,455.72
  6. Step 6: Final answer
    x = 9,077.70

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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.