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Finding the Fourth Proportional to 13,257.88, 18,295.88 and 7,289.52

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Solution

The fourth proportional to 13,257.88, 18,295.88 and 7,289.52 is: 10,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.88 : 18,295.88 = 7,289.52 : x
  2. Step 2: Convert to fraction form
    13,257.88/18,295.88 = 7,289.52/x
  3. Step 3: Cross multiply
    13,257.88x = 18,295.88 × 7,289.52
  4. Step 4: Simplify right side
    13,257.88x = 133,368,183.18
  5. Step 5: Solve for x
    x = 133,368,183.18/13,257.88
  6. Step 6: Final answer
    x = 10,059.54

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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.