Home / 13,130.62-18,121.32-7,467.14

Finding the Fourth Proportional to 13,130.62, 18,121.32 and 7,467.14

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Solution

The fourth proportional to 13,130.62, 18,121.32 and 7,467.14 is: 10,305.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.62 : 18,121.32 = 7,467.14 : x
  2. Step 2: Convert to fraction form
    13,130.62/18,121.32 = 7,467.14/x
  3. Step 3: Cross multiply
    13,130.62x = 18,121.32 × 7,467.14
  4. Step 4: Simplify right side
    13,130.62x = 135,314,433.42
  5. Step 5: Solve for x
    x = 135,314,433.42/13,130.62
  6. Step 6: Final answer
    x = 10,305.26

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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.