Home / 20,421.05-30,579.73-16,308.41

Finding the Fourth Proportional to 20,421.05, 30,579.73 and 16,308.41

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Solution

The fourth proportional to 20,421.05, 30,579.73 and 16,308.41 is: 24,421.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421.05 : 30,579.73 = 16,308.41 : x
  2. Step 2: Convert to fraction form
    20,421.05/30,579.73 = 16,308.41/x
  3. Step 3: Cross multiply
    20,421.05x = 30,579.73 × 16,308.41
  4. Step 4: Simplify right side
    20,421.05x = 498,706,580.86
  5. Step 5: Solve for x
    x = 498,706,580.86/20,421.05
  6. Step 6: Final answer
    x = 24,421.21

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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.