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Finding the Fourth Proportional to 13,330.95, 18,396.81 and 8,029.29

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Solution

The fourth proportional to 13,330.95, 18,396.81 and 8,029.29 is: 11,080.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.95 : 18,396.81 = 8,029.29 : x
  2. Step 2: Convert to fraction form
    13,330.95/18,396.81 = 8,029.29/x
  3. Step 3: Cross multiply
    13,330.95x = 18,396.81 × 8,029.29
  4. Step 4: Simplify right side
    13,330.95x = 147,713,322.56
  5. Step 5: Solve for x
    x = 147,713,322.56/13,330.95
  6. Step 6: Final answer
    x = 11,080.48

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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.