Home / 20,090.09-30,116.61-18,429.39

Finding the Fourth Proportional to 20,090.09, 30,116.61 and 18,429.39

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Solution

The fourth proportional to 20,090.09, 30,116.61 and 18,429.39 is: 27,627.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.09 : 30,116.61 = 18,429.39 : x
  2. Step 2: Convert to fraction form
    20,090.09/30,116.61 = 18,429.39/x
  3. Step 3: Cross multiply
    20,090.09x = 30,116.61 × 18,429.39
  4. Step 4: Simplify right side
    20,090.09x = 555,030,751.17
  5. Step 5: Solve for x
    x = 555,030,751.17/20,090.09
  6. Step 6: Final answer
    x = 27,627.09

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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.