Home / 20,560.88-30,841.40-4,978.52

Finding the Fourth Proportional to 20,560.88, 30,841.40 and 4,978.52

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Solution

The fourth proportional to 20,560.88, 30,841.40 and 4,978.52 is: 7,467.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.88 : 30,841.40 = 4,978.52 : x
  2. Step 2: Convert to fraction form
    20,560.88/30,841.40 = 4,978.52/x
  3. Step 3: Cross multiply
    20,560.88x = 30,841.40 × 4,978.52
  4. Step 4: Simplify right side
    20,560.88x = 153,544,526.73
  5. Step 5: Solve for x
    x = 153,544,526.73/20,560.88
  6. Step 6: Final answer
    x = 7,467.80

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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.