Home / 30,169.94-45,245.31-12,636.50

Finding the Fourth Proportional to 30,169.94, 45,245.31 and 12,636.50

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Solution

The fourth proportional to 30,169.94, 45,245.31 and 12,636.50 is: 18,950.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,169.94 : 45,245.31 = 12,636.50 : x
  2. Step 2: Convert to fraction form
    30,169.94/45,245.31 = 12,636.50/x
  3. Step 3: Cross multiply
    30,169.94x = 45,245.31 × 12,636.50
  4. Step 4: Simplify right side
    30,169.94x = 571,742,359.82
  5. Step 5: Solve for x
    x = 571,742,359.82/30,169.94
  6. Step 6: Final answer
    x = 18,950.73

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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.