Home / 30,421.44-45,631.46-13,769.42

Finding the Fourth Proportional to 30,421.44, 45,631.46 and 13,769.42

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Solution

The fourth proportional to 30,421.44, 45,631.46 and 13,769.42 is: 20,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.44 : 45,631.46 = 13,769.42 : x
  2. Step 2: Convert to fraction form
    30,421.44/45,631.46 = 13,769.42/x
  3. Step 3: Cross multiply
    30,421.44x = 45,631.46 × 13,769.42
  4. Step 4: Simplify right side
    30,421.44x = 628,318,440.95
  5. Step 5: Solve for x
    x = 628,318,440.95/30,421.44
  6. Step 6: Final answer
    x = 20,653.80

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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.