Home / 20,560.86-30,841.37-4,978.46

Finding the Fourth Proportional to 20,560.86, 30,841.37 and 4,978.46

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Solution

The fourth proportional to 20,560.86, 30,841.37 and 4,978.46 is: 7,467.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.86 : 30,841.37 = 4,978.46 : x
  2. Step 2: Convert to fraction form
    20,560.86/30,841.37 = 4,978.46/x
  3. Step 3: Cross multiply
    20,560.86x = 30,841.37 × 4,978.46
  4. Step 4: Simplify right side
    20,560.86x = 153,542,526.89
  5. Step 5: Solve for x
    x = 153,542,526.89/20,560.86
  6. Step 6: Final answer
    x = 7,467.71

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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.