Home / 13,758.24-20,639.78-4,399.08

Finding the Fourth Proportional to 13,758.24, 20,639.78 and 4,399.08

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Solution

The fourth proportional to 13,758.24, 20,639.78 and 4,399.08 is: 6,599.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.24 : 20,639.78 = 4,399.08 : x
  2. Step 2: Convert to fraction form
    13,758.24/20,639.78 = 4,399.08/x
  3. Step 3: Cross multiply
    13,758.24x = 20,639.78 × 4,399.08
  4. Step 4: Simplify right side
    13,758.24x = 90,796,043.40
  5. Step 5: Solve for x
    x = 90,796,043.40/13,758.24
  6. Step 6: Final answer
    x = 6,599.39

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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.