Home / 20,404.09-30,606.08-11,515.39

Finding the Fourth Proportional to 20,404.09, 30,606.08 and 11,515.39

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Solution

The fourth proportional to 20,404.09, 30,606.08 and 11,515.39 is: 17,273.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.09 : 30,606.08 = 11,515.39 : x
  2. Step 2: Convert to fraction form
    20,404.09/30,606.08 = 11,515.39/x
  3. Step 3: Cross multiply
    20,404.09x = 30,606.08 × 11,515.39
  4. Step 4: Simplify right side
    20,404.09x = 352,440,899.84
  5. Step 5: Solve for x
    x = 352,440,899.84/20,404.09
  6. Step 6: Final answer
    x = 17,273.05

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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.