Home / 13,900.53-20,861.75-5,137.95

Finding the Fourth Proportional to 13,900.53, 20,861.75 and 5,137.95

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Solution

The fourth proportional to 13,900.53, 20,861.75 and 5,137.95 is: 7,710.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.53 : 20,861.75 = 5,137.95 : x
  2. Step 2: Convert to fraction form
    13,900.53/20,861.75 = 5,137.95/x
  3. Step 3: Cross multiply
    13,900.53x = 20,861.75 × 5,137.95
  4. Step 4: Simplify right side
    13,900.53x = 107,186,628.41
  5. Step 5: Solve for x
    x = 107,186,628.41/13,900.53
  6. Step 6: Final answer
    x = 7,710.97

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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.