Home / 12,289.05-16,945.50-8,303.25

Finding the Fourth Proportional to 12,289.05, 16,945.50 and 8,303.25

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Solution

The fourth proportional to 12,289.05, 16,945.50 and 8,303.25 is: 11,449.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.05 : 16,945.50 = 8,303.25 : x
  2. Step 2: Convert to fraction form
    12,289.05/16,945.50 = 8,303.25/x
  3. Step 3: Cross multiply
    12,289.05x = 16,945.50 × 8,303.25
  4. Step 4: Simplify right side
    12,289.05x = 140,702,722.88
  5. Step 5: Solve for x
    x = 140,702,722.88/12,289.05
  6. Step 6: Final answer
    x = 11,449.44

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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.