Home / 13,816.12-20,718.90-4,453.75

Finding the Fourth Proportional to 13,816.12, 20,718.90 and 4,453.75

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Solution

The fourth proportional to 13,816.12, 20,718.90 and 4,453.75 is: 6,678.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.12 : 20,718.90 = 4,453.75 : x
  2. Step 2: Convert to fraction form
    13,816.12/20,718.90 = 4,453.75/x
  3. Step 3: Cross multiply
    13,816.12x = 20,718.90 × 4,453.75
  4. Step 4: Simplify right side
    13,816.12x = 92,276,800.88
  5. Step 5: Solve for x
    x = 92,276,800.88/13,816.12
  6. Step 6: Final answer
    x = 6,678.92

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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.