Home / 11,145.12-16,636.62-10,639.68

Finding the Fourth Proportional to 11,145.12, 16,636.62 and 10,639.68

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Solution

The fourth proportional to 11,145.12, 16,636.62 and 10,639.68 is: 15,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.12 : 16,636.62 = 10,639.68 : x
  2. Step 2: Convert to fraction form
    11,145.12/16,636.62 = 10,639.68/x
  3. Step 3: Cross multiply
    11,145.12x = 16,636.62 × 10,639.68
  4. Step 4: Simplify right side
    11,145.12x = 177,008,313.08
  5. Step 5: Solve for x
    x = 177,008,313.08/11,145.12
  6. Step 6: Final answer
    x = 15,882.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.