Home / 13,666.89-20,500.35-3,806.19

Finding the Fourth Proportional to 13,666.89, 20,500.35 and 3,806.19

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Solution

The fourth proportional to 13,666.89, 20,500.35 and 3,806.19 is: 5,709.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.89 : 20,500.35 = 3,806.19 : x
  2. Step 2: Convert to fraction form
    13,666.89/20,500.35 = 3,806.19/x
  3. Step 3: Cross multiply
    13,666.89x = 20,500.35 × 3,806.19
  4. Step 4: Simplify right side
    13,666.89x = 78,028,227.17
  5. Step 5: Solve for x
    x = 78,028,227.17/13,666.89
  6. Step 6: Final answer
    x = 5,709.29

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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.