Home / 11,919.84-16,449.23-6,815.30

Finding the Fourth Proportional to 11,919.84, 16,449.23 and 6,815.30

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Solution

The fourth proportional to 11,919.84, 16,449.23 and 6,815.30 is: 9,405.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.84 : 16,449.23 = 6,815.30 : x
  2. Step 2: Convert to fraction form
    11,919.84/16,449.23 = 6,815.30/x
  3. Step 3: Cross multiply
    11,919.84x = 16,449.23 × 6,815.30
  4. Step 4: Simplify right side
    11,919.84x = 112,106,320.90
  5. Step 5: Solve for x
    x = 112,106,320.90/11,919.84
  6. Step 6: Final answer
    x = 9,405.02

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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.