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Finding the Fourth Proportional to 12,325.92, 18,405.18 and 9,798.72

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Solution

The fourth proportional to 12,325.92, 18,405.18 and 9,798.72 is: 14,631.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.92 : 18,405.18 = 9,798.72 : x
  2. Step 2: Convert to fraction form
    12,325.92/18,405.18 = 9,798.72/x
  3. Step 3: Cross multiply
    12,325.92x = 18,405.18 × 9,798.72
  4. Step 4: Simplify right side
    12,325.92x = 180,347,205.37
  5. Step 5: Solve for x
    x = 180,347,205.37/12,325.92
  6. Step 6: Final answer
    x = 14,631.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.