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Finding the Fourth Proportional to 11,235, 16,856.10 and 5,392.02

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Solution

The fourth proportional to 11,235, 16,856.10 and 5,392.02 is: 8,089.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235 : 16,856.10 = 5,392.02 : x
  2. Step 2: Convert to fraction form
    11,235/16,856.10 = 5,392.02/x
  3. Step 3: Cross multiply
    11,235x = 16,856.10 × 5,392.02
  4. Step 4: Simplify right side
    11,235x = 90,888,428.32
  5. Step 5: Solve for x
    x = 90,888,428.32/11,235
  6. Step 6: Final answer
    x = 8,089.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.