Home / 13,419.09-18,518.92-7,450.76

Finding the Fourth Proportional to 13,419.09, 18,518.92 and 7,450.76

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Solution

The fourth proportional to 13,419.09, 18,518.92 and 7,450.76 is: 10,282.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.09 : 18,518.92 = 7,450.76 : x
  2. Step 2: Convert to fraction form
    13,419.09/18,518.92 = 7,450.76/x
  3. Step 3: Cross multiply
    13,419.09x = 18,518.92 × 7,450.76
  4. Step 4: Simplify right side
    13,419.09x = 137,980,014.54
  5. Step 5: Solve for x
    x = 137,980,014.54/13,419.09
  6. Step 6: Final answer
    x = 10,282.37

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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.