Home / 13,621.57-18,797.06-9,144.70

Finding the Fourth Proportional to 13,621.57, 18,797.06 and 9,144.70

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Solution

The fourth proportional to 13,621.57, 18,797.06 and 9,144.70 is: 12,619.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.57 : 18,797.06 = 9,144.70 : x
  2. Step 2: Convert to fraction form
    13,621.57/18,797.06 = 9,144.70/x
  3. Step 3: Cross multiply
    13,621.57x = 18,797.06 × 9,144.70
  4. Step 4: Simplify right side
    13,621.57x = 171,893,450.45
  5. Step 5: Solve for x
    x = 171,893,450.45/13,621.57
  6. Step 6: Final answer
    x = 12,619.21

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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.