Home / 13,218.85-18,232.45-11,226.25

Finding the Fourth Proportional to 13,218.85, 18,232.45 and 11,226.25

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Solution

The fourth proportional to 13,218.85, 18,232.45 and 11,226.25 is: 15,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.85 : 18,232.45 = 11,226.25 : x
  2. Step 2: Convert to fraction form
    13,218.85/18,232.45 = 11,226.25/x
  3. Step 3: Cross multiply
    13,218.85x = 18,232.45 × 11,226.25
  4. Step 4: Simplify right side
    13,218.85x = 204,682,041.81
  5. Step 5: Solve for x
    x = 204,682,041.81/13,218.85
  6. Step 6: Final answer
    x = 15,484.10

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Double scale
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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.