Home / 12,986.76-19,484.67-4,103.46

Finding the Fourth Proportional to 12,986.76, 19,484.67 and 4,103.46

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Solution

The fourth proportional to 12,986.76, 19,484.67 and 4,103.46 is: 6,156.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.76 : 19,484.67 = 4,103.46 : x
  2. Step 2: Convert to fraction form
    12,986.76/19,484.67 = 4,103.46/x
  3. Step 3: Cross multiply
    12,986.76x = 19,484.67 × 4,103.46
  4. Step 4: Simplify right side
    12,986.76x = 79,954,563.96
  5. Step 5: Solve for x
    x = 79,954,563.96/12,986.76
  6. Step 6: Final answer
    x = 6,156.62

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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.