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Finding the Fourth Proportional to 13,696.49, 18,903.47 and 7,953.05

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Solution

The fourth proportional to 13,696.49, 18,903.47 and 7,953.05 is: 10,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,696.49 : 18,903.47 = 7,953.05 : x
  2. Step 2: Convert to fraction form
    13,696.49/18,903.47 = 7,953.05/x
  3. Step 3: Cross multiply
    13,696.49x = 18,903.47 × 7,953.05
  4. Step 4: Simplify right side
    13,696.49x = 150,340,242.08
  5. Step 5: Solve for x
    x = 150,340,242.08/13,696.49
  6. Step 6: Final answer
    x = 10,976.56

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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.