Home / 13,329.78-18,394.51-7,361.32

Finding the Fourth Proportional to 13,329.78, 18,394.51 and 7,361.32

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Solution

The fourth proportional to 13,329.78, 18,394.51 and 7,361.32 is: 10,158.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,329.78 : 18,394.51 = 7,361.32 : x
  2. Step 2: Convert to fraction form
    13,329.78/18,394.51 = 7,361.32/x
  3. Step 3: Cross multiply
    13,329.78x = 18,394.51 × 7,361.32
  4. Step 4: Simplify right side
    13,329.78x = 135,407,874.35
  5. Step 5: Solve for x
    x = 135,407,874.35/13,329.78
  6. Step 6: Final answer
    x = 10,158.30

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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.