Home / 13,878.49-20,815.68-6,482.33

Finding the Fourth Proportional to 13,878.49, 20,815.68 and 6,482.33

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Solution

The fourth proportional to 13,878.49, 20,815.68 and 6,482.33 is: 9,722.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.49 : 20,815.68 = 6,482.33 : x
  2. Step 2: Convert to fraction form
    13,878.49/20,815.68 = 6,482.33/x
  3. Step 3: Cross multiply
    13,878.49x = 20,815.68 × 6,482.33
  4. Step 4: Simplify right side
    13,878.49x = 134,934,105.22
  5. Step 5: Solve for x
    x = 134,934,105.22/13,878.49
  6. Step 6: Final answer
    x = 9,722.54

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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.