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Finding the Fourth Proportional to 13,344.51, 18,412.81 and 8,039.62

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Solution

The fourth proportional to 13,344.51, 18,412.81 and 8,039.62 is: 11,093.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,344.51 : 18,412.81 = 8,039.62 : x
  2. Step 2: Convert to fraction form
    13,344.51/18,412.81 = 8,039.62/x
  3. Step 3: Cross multiply
    13,344.51x = 18,412.81 × 8,039.62
  4. Step 4: Simplify right side
    13,344.51x = 148,031,929.40
  5. Step 5: Solve for x
    x = 148,031,929.40/13,344.51
  6. Step 6: Final answer
    x = 11,093.10

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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.