Home / 20,797.20-31,173.48-19,135.98

Finding the Fourth Proportional to 20,797.20, 31,173.48 and 19,135.98

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Solution

The fourth proportional to 20,797.20, 31,173.48 and 19,135.98 is: 28,683.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.20 : 31,173.48 = 19,135.98 : x
  2. Step 2: Convert to fraction form
    20,797.20/31,173.48 = 19,135.98/x
  3. Step 3: Cross multiply
    20,797.20x = 31,173.48 × 19,135.98
  4. Step 4: Simplify right side
    20,797.20x = 596,535,089.81
  5. Step 5: Solve for x
    x = 596,535,089.81/20,797.20
  6. Step 6: Final answer
    x = 28,683.43

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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.