Home / 15,083.35-20,741.21-13,090.45

Finding the Fourth Proportional to 15,083.35, 20,741.21 and 13,090.45

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Solution

The fourth proportional to 15,083.35, 20,741.21 and 13,090.45 is: 18,000.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,083.35 : 20,741.21 = 13,090.45 : x
  2. Step 2: Convert to fraction form
    15,083.35/20,741.21 = 13,090.45/x
  3. Step 3: Cross multiply
    15,083.35x = 20,741.21 × 13,090.45
  4. Step 4: Simplify right side
    15,083.35x = 271,511,816.75
  5. Step 5: Solve for x
    x = 271,511,816.75/15,083.35
  6. Step 6: Final answer
    x = 18,000.76

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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.