Home / 13,803.94-20,705.72-3,415.70

Finding the Fourth Proportional to 13,803.94, 20,705.72 and 3,415.70

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Solution

The fourth proportional to 13,803.94, 20,705.72 and 3,415.70 is: 5,123.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.94 : 20,705.72 = 3,415.70 : x
  2. Step 2: Convert to fraction form
    13,803.94/20,705.72 = 3,415.70/x
  3. Step 3: Cross multiply
    13,803.94x = 20,705.72 × 3,415.70
  4. Step 4: Simplify right side
    13,803.94x = 70,724,527.80
  5. Step 5: Solve for x
    x = 70,724,527.80/13,803.94
  6. Step 6: Final answer
    x = 5,123.50

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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.