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Finding the Fourth Proportional to 12,798.72, 17,660.96 and 9,443.36

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Solution

The fourth proportional to 12,798.72, 17,660.96 and 9,443.36 is: 13,030.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.72 : 17,660.96 = 9,443.36 : x
  2. Step 2: Convert to fraction form
    12,798.72/17,660.96 = 9,443.36/x
  3. Step 3: Cross multiply
    12,798.72x = 17,660.96 × 9,443.36
  4. Step 4: Simplify right side
    12,798.72x = 166,778,803.23
  5. Step 5: Solve for x
    x = 166,778,803.23/12,798.72
  6. Step 6: Final answer
    x = 13,030.90

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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.