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Finding the Fourth Proportional to 13,295.50, 18,339.66 and 7,914.33

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Solution

The fourth proportional to 13,295.50, 18,339.66 and 7,914.33 is: 10,916.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,295.50 : 18,339.66 = 7,914.33 : x
  2. Step 2: Convert to fraction form
    13,295.50/18,339.66 = 7,914.33/x
  3. Step 3: Cross multiply
    13,295.50x = 18,339.66 × 7,914.33
  4. Step 4: Simplify right side
    13,295.50x = 145,146,121.33
  5. Step 5: Solve for x
    x = 145,146,121.33/13,295.50
  6. Step 6: Final answer
    x = 10,916.94

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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.