Home / 40,438.35-60,664.85-13,782.87

Finding the Fourth Proportional to 40,438.35, 60,664.85 and 13,782.87

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Solution

The fourth proportional to 40,438.35, 60,664.85 and 13,782.87 is: 20,676.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,438.35 : 60,664.85 = 13,782.87 : x
  2. Step 2: Convert to fraction form
    40,438.35/60,664.85 = 13,782.87/x
  3. Step 3: Cross multiply
    40,438.35x = 60,664.85 × 13,782.87
  4. Step 4: Simplify right side
    40,438.35x = 836,135,672.21
  5. Step 5: Solve for x
    x = 836,135,672.21/40,438.35
  6. Step 6: Final answer
    x = 20,676.80

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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.