Home / 13,152.29-18,138.94-11,118.05

Finding the Fourth Proportional to 13,152.29, 18,138.94 and 11,118.05

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Solution

The fourth proportional to 13,152.29, 18,138.94 and 11,118.05 is: 15,333.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.29 : 18,138.94 = 11,118.05 : x
  2. Step 2: Convert to fraction form
    13,152.29/18,138.94 = 11,118.05/x
  3. Step 3: Cross multiply
    13,152.29x = 18,138.94 × 11,118.05
  4. Step 4: Simplify right side
    13,152.29x = 201,669,641.87
  5. Step 5: Solve for x
    x = 201,669,641.87/13,152.29
  6. Step 6: Final answer
    x = 15,333.42

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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.