Home / 13,618.15-20,428.40-3,757.43

Finding the Fourth Proportional to 13,618.15, 20,428.40 and 3,757.43

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Solution

The fourth proportional to 13,618.15, 20,428.40 and 3,757.43 is: 5,636.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.15 : 20,428.40 = 3,757.43 : x
  2. Step 2: Convert to fraction form
    13,618.15/20,428.40 = 3,757.43/x
  3. Step 3: Cross multiply
    13,618.15x = 20,428.40 × 3,757.43
  4. Step 4: Simplify right side
    13,618.15x = 76,758,162.08
  5. Step 5: Solve for x
    x = 76,758,162.08/13,618.15
  6. Step 6: Final answer
    x = 5,636.46

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1.5x scale

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.