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Finding the Fourth Proportional to 13,260.44, 18,299.94 and 7,953.32

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Solution

The fourth proportional to 13,260.44, 18,299.94 and 7,953.32 is: 10,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260.44 : 18,299.94 = 7,953.32 : x
  2. Step 2: Convert to fraction form
    13,260.44/18,299.94 = 7,953.32/x
  3. Step 3: Cross multiply
    13,260.44x = 18,299.94 × 7,953.32
  4. Step 4: Simplify right side
    13,260.44x = 145,545,278.80
  5. Step 5: Solve for x
    x = 145,545,278.80/13,260.44
  6. Step 6: Final answer
    x = 10,975.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.