Home / 13,618.35-18,795.51-12,728.97

Finding the Fourth Proportional to 13,618.35, 18,795.51 and 12,728.97

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Solution

The fourth proportional to 13,618.35, 18,795.51 and 12,728.97 is: 17,568.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.35 : 18,795.51 = 12,728.97 : x
  2. Step 2: Convert to fraction form
    13,618.35/18,795.51 = 12,728.97/x
  3. Step 3: Cross multiply
    13,618.35x = 18,795.51 × 12,728.97
  4. Step 4: Simplify right side
    13,618.35x = 239,247,482.92
  5. Step 5: Solve for x
    x = 239,247,482.92/13,618.35
  6. Step 6: Final answer
    x = 17,568.02

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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.