Home / 45,421.81-68,135.07-13,829.43

Finding the Fourth Proportional to 45,421.81, 68,135.07 and 13,829.43

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Solution

The fourth proportional to 45,421.81, 68,135.07 and 13,829.43 is: 20,744.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,421.81 : 68,135.07 = 13,829.43 : x
  2. Step 2: Convert to fraction form
    45,421.81/68,135.07 = 13,829.43/x
  3. Step 3: Cross multiply
    45,421.81x = 68,135.07 × 13,829.43
  4. Step 4: Simplify right side
    45,421.81x = 942,269,488.48
  5. Step 5: Solve for x
    x = 942,269,488.48/45,421.81
  6. Step 6: Final answer
    x = 20,744.87

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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.