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Finding the Fourth Proportional to 13,469.88, 18,586.88 and 7,804.72

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Solution

The fourth proportional to 13,469.88, 18,586.88 and 7,804.72 is: 10,769.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,469.88 : 18,586.88 = 7,804.72 : x
  2. Step 2: Convert to fraction form
    13,469.88/18,586.88 = 7,804.72/x
  3. Step 3: Cross multiply
    13,469.88x = 18,586.88 × 7,804.72
  4. Step 4: Simplify right side
    13,469.88x = 145,065,394.07
  5. Step 5: Solve for x
    x = 145,065,394.07/13,469.88
  6. Step 6: Final answer
    x = 10,769.61

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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.