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Finding the Fourth Proportional to 43,485.75, 65,228.67 and 10,653.75

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Solution

The fourth proportional to 43,485.75, 65,228.67 and 10,653.75 is: 15,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,485.75 : 65,228.67 = 10,653.75 : x
  2. Step 2: Convert to fraction form
    43,485.75/65,228.67 = 10,653.75/x
  3. Step 3: Cross multiply
    43,485.75x = 65,228.67 × 10,653.75
  4. Step 4: Simplify right side
    43,485.75x = 694,929,943.01
  5. Step 5: Solve for x
    x = 694,929,943.01/43,485.75
  6. Step 6: Final answer
    x = 15,980.64

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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.