Home / 20,570.34-30,855.50-4,987.97

Finding the Fourth Proportional to 20,570.34, 30,855.50 and 4,987.97

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Solution

The fourth proportional to 20,570.34, 30,855.50 and 4,987.97 is: 7,481.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.34 : 30,855.50 = 4,987.97 : x
  2. Step 2: Convert to fraction form
    20,570.34/30,855.50 = 4,987.97/x
  3. Step 3: Cross multiply
    20,570.34x = 30,855.50 × 4,987.97
  4. Step 4: Simplify right side
    20,570.34x = 153,906,308.34
  5. Step 5: Solve for x
    x = 153,906,308.34/20,570.34
  6. Step 6: Final answer
    x = 7,481.95

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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.