Home / 10,919.19-16,378.79-4,345.44

Finding the Fourth Proportional to 10,919.19, 16,378.79 and 4,345.44

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Solution

The fourth proportional to 10,919.19, 16,378.79 and 4,345.44 is: 6,518.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.19 : 16,378.79 = 4,345.44 : x
  2. Step 2: Convert to fraction form
    10,919.19/16,378.79 = 4,345.44/x
  3. Step 3: Cross multiply
    10,919.19x = 16,378.79 × 4,345.44
  4. Step 4: Simplify right side
    10,919.19x = 71,173,049.22
  5. Step 5: Solve for x
    x = 71,173,049.22/10,919.19
  6. Step 6: Final answer
    x = 6,518.16

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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.