Home / 13,281.96-19,923.99-3,421.35

Finding the Fourth Proportional to 13,281.96, 19,923.99 and 3,421.35

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Solution

The fourth proportional to 13,281.96, 19,923.99 and 3,421.35 is: 5,132.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.96 : 19,923.99 = 3,421.35 : x
  2. Step 2: Convert to fraction form
    13,281.96/19,923.99 = 3,421.35/x
  3. Step 3: Cross multiply
    13,281.96x = 19,923.99 × 3,421.35
  4. Step 4: Simplify right side
    13,281.96x = 68,166,943.19
  5. Step 5: Solve for x
    x = 68,166,943.19/13,281.96
  6. Step 6: Final answer
    x = 5,132.30

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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.