Home / 20,628.69-28,459.62-11,674.14

Finding the Fourth Proportional to 20,628.69, 28,459.62 and 11,674.14

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Solution

The fourth proportional to 20,628.69, 28,459.62 and 11,674.14 is: 16,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.69 : 28,459.62 = 11,674.14 : x
  2. Step 2: Convert to fraction form
    20,628.69/28,459.62 = 11,674.14/x
  3. Step 3: Cross multiply
    20,628.69x = 28,459.62 × 11,674.14
  4. Step 4: Simplify right side
    20,628.69x = 332,241,588.23
  5. Step 5: Solve for x
    x = 332,241,588.23/20,628.69
  6. Step 6: Final answer
    x = 16,105.80

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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.