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Finding the Fourth Proportional to 18,111.64, 24,995.02 and 10,455.92

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Solution

The fourth proportional to 18,111.64, 24,995.02 and 10,455.92 is: 14,429.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,111.64 : 24,995.02 = 10,455.92 : x
  2. Step 2: Convert to fraction form
    18,111.64/24,995.02 = 10,455.92/x
  3. Step 3: Cross multiply
    18,111.64x = 24,995.02 × 10,455.92
  4. Step 4: Simplify right side
    18,111.64x = 261,345,929.52
  5. Step 5: Solve for x
    x = 261,345,929.52/18,111.64
  6. Step 6: Final answer
    x = 14,429.72

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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.