Home / 19,640.57-29,451.20-6,986.07

Finding the Fourth Proportional to 19,640.57, 29,451.20 and 6,986.07

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Solution

The fourth proportional to 19,640.57, 29,451.20 and 6,986.07 is: 10,475.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.57 : 29,451.20 = 6,986.07 : x
  2. Step 2: Convert to fraction form
    19,640.57/29,451.20 = 6,986.07/x
  3. Step 3: Cross multiply
    19,640.57x = 29,451.20 × 6,986.07
  4. Step 4: Simplify right side
    19,640.57x = 205,748,109.85
  5. Step 5: Solve for x
    x = 205,748,109.85/19,640.57
  6. Step 6: Final answer
    x = 10,475.67

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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.