Home / 20,425.27-30,603.31-12,511.23

Finding the Fourth Proportional to 20,425.27, 30,603.31 and 12,511.23

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Solution

The fourth proportional to 20,425.27, 30,603.31 and 12,511.23 is: 18,745.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.27 : 30,603.31 = 12,511.23 : x
  2. Step 2: Convert to fraction form
    20,425.27/30,603.31 = 12,511.23/x
  3. Step 3: Cross multiply
    20,425.27x = 30,603.31 × 12,511.23
  4. Step 4: Simplify right side
    20,425.27x = 382,885,144.75
  5. Step 5: Solve for x
    x = 382,885,144.75/20,425.27
  6. Step 6: Final answer
    x = 18,745.66

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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.