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Finding the Fourth Proportional to 13,208, 18,227.04 and 7,619.36

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Solution

The fourth proportional to 13,208, 18,227.04 and 7,619.36 is: 10,514.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208 : 18,227.04 = 7,619.36 : x
  2. Step 2: Convert to fraction form
    13,208/18,227.04 = 7,619.36/x
  3. Step 3: Cross multiply
    13,208x = 18,227.04 × 7,619.36
  4. Step 4: Simplify right side
    13,208x = 138,878,379.49
  5. Step 5: Solve for x
    x = 138,878,379.49/13,208
  6. Step 6: Final answer
    x = 10,514.72

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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.