Home / 20,277.18-30,421.32-9,756

Finding the Fourth Proportional to 20,277.18, 30,421.32 and 9,756

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Solution

The fourth proportional to 20,277.18, 30,421.32 and 9,756 is: 14,636.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.18 : 30,421.32 = 9,756 : x
  2. Step 2: Convert to fraction form
    20,277.18/30,421.32 = 9,756/x
  3. Step 3: Cross multiply
    20,277.18x = 30,421.32 × 9,756
  4. Step 4: Simplify right side
    20,277.18x = 296,790,397.92
  5. Step 5: Solve for x
    x = 296,790,397.92/20,277.18
  6. Step 6: Final answer
    x = 14,636.67

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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.