Home / 13,419.35-18,518.42-7,450.92

Finding the Fourth Proportional to 13,419.35, 18,518.42 and 7,450.92

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Solution

The fourth proportional to 13,419.35, 18,518.42 and 7,450.92 is: 10,282.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.35 : 18,518.42 = 7,450.92 : x
  2. Step 2: Convert to fraction form
    13,419.35/18,518.42 = 7,450.92/x
  3. Step 3: Cross multiply
    13,419.35x = 18,518.42 × 7,450.92
  4. Step 4: Simplify right side
    13,419.35x = 137,979,284.57
  5. Step 5: Solve for x
    x = 137,979,284.57/13,419.35
  6. Step 6: Final answer
    x = 10,282.11

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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.