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Finding the Fourth Proportional to 40,485.67, 60,735.42 and 13,830.19

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Solution

The fourth proportional to 40,485.67, 60,735.42 and 13,830.19 is: 20,747.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,485.67 : 60,735.42 = 13,830.19 : x
  2. Step 2: Convert to fraction form
    40,485.67/60,735.42 = 13,830.19/x
  3. Step 3: Cross multiply
    40,485.67x = 60,735.42 × 13,830.19
  4. Step 4: Simplify right side
    40,485.67x = 839,982,246.49
  5. Step 5: Solve for x
    x = 839,982,246.49/40,485.67
  6. Step 6: Final answer
    x = 20,747.64

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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.