Home / 20,648.12-30,946.80-9,539.78

Finding the Fourth Proportional to 20,648.12, 30,946.80 and 9,539.78

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Solution

The fourth proportional to 20,648.12, 30,946.80 and 9,539.78 is: 14,297.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.12 : 30,946.80 = 9,539.78 : x
  2. Step 2: Convert to fraction form
    20,648.12/30,946.80 = 9,539.78/x
  3. Step 3: Cross multiply
    20,648.12x = 30,946.80 × 9,539.78
  4. Step 4: Simplify right side
    20,648.12x = 295,225,663.70
  5. Step 5: Solve for x
    x = 295,225,663.70/20,648.12
  6. Step 6: Final answer
    x = 14,297.94

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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.