Home / 20,455.54-30,741.09-12,137.12

Finding the Fourth Proportional to 20,455.54, 30,741.09 and 12,137.12

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Solution

The fourth proportional to 20,455.54, 30,741.09 and 12,137.12 is: 18,239.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.54 : 30,741.09 = 12,137.12 : x
  2. Step 2: Convert to fraction form
    20,455.54/30,741.09 = 12,137.12/x
  3. Step 3: Cross multiply
    20,455.54x = 30,741.09 × 12,137.12
  4. Step 4: Simplify right side
    20,455.54x = 373,108,298.26
  5. Step 5: Solve for x
    x = 373,108,298.26/20,455.54
  6. Step 6: Final answer
    x = 18,239.96

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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.