Home / 43,680.64-65,546.36-18,378.32

Finding the Fourth Proportional to 43,680.64, 65,546.36 and 18,378.32

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Solution

The fourth proportional to 43,680.64, 65,546.36 and 18,378.32 is: 27,578.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,680.64 : 65,546.36 = 18,378.32 : x
  2. Step 2: Convert to fraction form
    43,680.64/65,546.36 = 18,378.32/x
  3. Step 3: Cross multiply
    43,680.64x = 65,546.36 × 18,378.32
  4. Step 4: Simplify right side
    43,680.64x = 1,204,631,978.92
  5. Step 5: Solve for x
    x = 1,204,631,978.92/43,680.64
  6. Step 6: Final answer
    x = 27,578.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.