Home / 20,129.10-30,314.20-18,333.48

Finding the Fourth Proportional to 20,129.10, 30,314.20 and 18,333.48

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Solution

The fourth proportional to 20,129.10, 30,314.20 and 18,333.48 is: 27,610.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.10 : 30,314.20 = 18,333.48 : x
  2. Step 2: Convert to fraction form
    20,129.10/30,314.20 = 18,333.48/x
  3. Step 3: Cross multiply
    20,129.10x = 30,314.20 × 18,333.48
  4. Step 4: Simplify right side
    20,129.10x = 555,764,779.42
  5. Step 5: Solve for x
    x = 555,764,779.42/20,129.10
  6. Step 6: Final answer
    x = 27,610.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.