Home / 13,297.35-18,355.04-11,878.57

Finding the Fourth Proportional to 13,297.35, 18,355.04 and 11,878.57

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Solution

The fourth proportional to 13,297.35, 18,355.04 and 11,878.57 is: 16,396.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297.35 : 18,355.04 = 11,878.57 : x
  2. Step 2: Convert to fraction form
    13,297.35/18,355.04 = 11,878.57/x
  3. Step 3: Cross multiply
    13,297.35x = 18,355.04 × 11,878.57
  4. Step 4: Simplify right side
    13,297.35x = 218,031,627.49
  5. Step 5: Solve for x
    x = 218,031,627.49/13,297.35
  6. Step 6: Final answer
    x = 16,396.62

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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.