Home / 13,386.76-18,474.20-8,080.54

Finding the Fourth Proportional to 13,386.76, 18,474.20 and 8,080.54

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Solution

The fourth proportional to 13,386.76, 18,474.20 and 8,080.54 is: 11,151.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.76 : 18,474.20 = 8,080.54 : x
  2. Step 2: Convert to fraction form
    13,386.76/18,474.20 = 8,080.54/x
  3. Step 3: Cross multiply
    13,386.76x = 18,474.20 × 8,080.54
  4. Step 4: Simplify right side
    13,386.76x = 149,281,379.29
  5. Step 5: Solve for x
    x = 149,281,379.29/13,386.76
  6. Step 6: Final answer
    x = 11,151.42

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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.