Home / 13,715.87-20,571.98-3,856.14

Finding the Fourth Proportional to 13,715.87, 20,571.98 and 3,856.14

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Solution

The fourth proportional to 13,715.87, 20,571.98 and 3,856.14 is: 5,783.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.87 : 20,571.98 = 3,856.14 : x
  2. Step 2: Convert to fraction form
    13,715.87/20,571.98 = 3,856.14/x
  3. Step 3: Cross multiply
    13,715.87x = 20,571.98 × 3,856.14
  4. Step 4: Simplify right side
    13,715.87x = 79,328,415.68
  5. Step 5: Solve for x
    x = 79,328,415.68/13,715.87
  6. Step 6: Final answer
    x = 5,783.70

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1.5x scale

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.