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Finding the Fourth Proportional to 13,112.70, 18,094.10 and 7,806.48

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Solution

The fourth proportional to 13,112.70, 18,094.10 and 7,806.48 is: 10,772.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.70 : 18,094.10 = 7,806.48 : x
  2. Step 2: Convert to fraction form
    13,112.70/18,094.10 = 7,806.48/x
  3. Step 3: Cross multiply
    13,112.70x = 18,094.10 × 7,806.48
  4. Step 4: Simplify right side
    13,112.70x = 141,251,229.77
  5. Step 5: Solve for x
    x = 141,251,229.77/13,112.70
  6. Step 6: Final answer
    x = 10,772.09

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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.