Home / 13,219.08-18,243.81-8,443.46

Finding the Fourth Proportional to 13,219.08, 18,243.81 and 8,443.46

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Solution

The fourth proportional to 13,219.08, 18,243.81 and 8,443.46 is: 11,652.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.08 : 18,243.81 = 8,443.46 : x
  2. Step 2: Convert to fraction form
    13,219.08/18,243.81 = 8,443.46/x
  3. Step 3: Cross multiply
    13,219.08x = 18,243.81 × 8,443.46
  4. Step 4: Simplify right side
    13,219.08x = 154,040,788.76
  5. Step 5: Solve for x
    x = 154,040,788.76/13,219.08
  6. Step 6: Final answer
    x = 11,652.91

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Double scale
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Similar ratio
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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.