Home / 11,219.60-15,482.39-6,438.44

Finding the Fourth Proportional to 11,219.60, 15,482.39 and 6,438.44

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Solution

The fourth proportional to 11,219.60, 15,482.39 and 6,438.44 is: 8,884.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,219.60 : 15,482.39 = 6,438.44 : x
  2. Step 2: Convert to fraction form
    11,219.60/15,482.39 = 6,438.44/x
  3. Step 3: Cross multiply
    11,219.60x = 15,482.39 × 6,438.44
  4. Step 4: Simplify right side
    11,219.60x = 99,682,329.47
  5. Step 5: Solve for x
    x = 99,682,329.47/11,219.60
  6. Step 6: Final answer
    x = 8,884.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.