Home / 13,621.54-18,798.21-7,653.09

Finding the Fourth Proportional to 13,621.54, 18,798.21 and 7,653.09

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Solution

The fourth proportional to 13,621.54, 18,798.21 and 7,653.09 is: 10,561.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.54 : 18,798.21 = 7,653.09 : x
  2. Step 2: Convert to fraction form
    13,621.54/18,798.21 = 7,653.09/x
  3. Step 3: Cross multiply
    13,621.54x = 18,798.21 × 7,653.09
  4. Step 4: Simplify right side
    13,621.54x = 143,864,392.97
  5. Step 5: Solve for x
    x = 143,864,392.97/13,621.54
  6. Step 6: Final answer
    x = 10,561.54

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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.