Home / 20,365.40-30,539.90-8,511.41

Finding the Fourth Proportional to 20,365.40, 30,539.90 and 8,511.41

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Solution

The fourth proportional to 20,365.40, 30,539.90 and 8,511.41 is: 12,763.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.40 : 30,539.90 = 8,511.41 : x
  2. Step 2: Convert to fraction form
    20,365.40/30,539.90 = 8,511.41/x
  3. Step 3: Cross multiply
    20,365.40x = 30,539.90 × 8,511.41
  4. Step 4: Simplify right side
    20,365.40x = 259,937,610.26
  5. Step 5: Solve for x
    x = 259,937,610.26/20,365.40
  6. Step 6: Final answer
    x = 12,763.69

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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.