Home / 13,281.21-19,922.01-3,420.27

Finding the Fourth Proportional to 13,281.21, 19,922.01 and 3,420.27

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Solution

The fourth proportional to 13,281.21, 19,922.01 and 3,420.27 is: 5,130.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.21 : 19,922.01 = 3,420.27 : x
  2. Step 2: Convert to fraction form
    13,281.21/19,922.01 = 3,420.27/x
  3. Step 3: Cross multiply
    13,281.21x = 19,922.01 × 3,420.27
  4. Step 4: Simplify right side
    13,281.21x = 68,138,653.14
  5. Step 5: Solve for x
    x = 68,138,653.14/13,281.21
  6. Step 6: Final answer
    x = 5,130.46

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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.