Home / 11,529.35-15,909.69-6,812.72

Finding the Fourth Proportional to 11,529.35, 15,909.69 and 6,812.72

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Solution

The fourth proportional to 11,529.35, 15,909.69 and 6,812.72 is: 9,401.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,529.35 : 15,909.69 = 6,812.72 : x
  2. Step 2: Convert to fraction form
    11,529.35/15,909.69 = 6,812.72/x
  3. Step 3: Cross multiply
    11,529.35x = 15,909.69 × 6,812.72
  4. Step 4: Simplify right side
    11,529.35x = 108,388,268.92
  5. Step 5: Solve for x
    x = 108,388,268.92/11,529.35
  6. Step 6: Final answer
    x = 9,401.07

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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.