Home / 13,153.53-18,138.05-8,671.55

Finding the Fourth Proportional to 13,153.53, 18,138.05 and 8,671.55

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Solution

The fourth proportional to 13,153.53, 18,138.05 and 8,671.55 is: 11,957.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.53 : 18,138.05 = 8,671.55 : x
  2. Step 2: Convert to fraction form
    13,153.53/18,138.05 = 8,671.55/x
  3. Step 3: Cross multiply
    13,153.53x = 18,138.05 × 8,671.55
  4. Step 4: Simplify right side
    13,153.53x = 157,284,873.43
  5. Step 5: Solve for x
    x = 157,284,873.43/13,153.53
  6. Step 6: Final answer
    x = 11,957.62

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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.