Home / 13,605.04-18,772.58-7,636.96

Finding the Fourth Proportional to 13,605.04, 18,772.58 and 7,636.96

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Solution

The fourth proportional to 13,605.04, 18,772.58 and 7,636.96 is: 10,537.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.04 : 18,772.58 = 7,636.96 : x
  2. Step 2: Convert to fraction form
    13,605.04/18,772.58 = 7,636.96/x
  3. Step 3: Cross multiply
    13,605.04x = 18,772.58 × 7,636.96
  4. Step 4: Simplify right side
    13,605.04x = 143,365,414.72
  5. Step 5: Solve for x
    x = 143,365,414.72/13,605.04
  6. Step 6: Final answer
    x = 10,537.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.