Home / 18,622.35-25,673.69-12,643.64

Finding the Fourth Proportional to 18,622.35, 25,673.69 and 12,643.64

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Solution

The fourth proportional to 18,622.35, 25,673.69 and 12,643.64 is: 17,431.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.35 : 25,673.69 = 12,643.64 : x
  2. Step 2: Convert to fraction form
    18,622.35/25,673.69 = 12,643.64/x
  3. Step 3: Cross multiply
    18,622.35x = 25,673.69 × 12,643.64
  4. Step 4: Simplify right side
    18,622.35x = 324,608,822.23
  5. Step 5: Solve for x
    x = 324,608,822.23/18,622.35
  6. Step 6: Final answer
    x = 17,431.14

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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.