Home / 13,500.30-20,250.33-3,638.76

Finding the Fourth Proportional to 13,500.30, 20,250.33 and 3,638.76

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Solution

The fourth proportional to 13,500.30, 20,250.33 and 3,638.76 is: 5,458.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,500.30 : 20,250.33 = 3,638.76 : x
  2. Step 2: Convert to fraction form
    13,500.30/20,250.33 = 3,638.76/x
  3. Step 3: Cross multiply
    13,500.30x = 20,250.33 × 3,638.76
  4. Step 4: Simplify right side
    13,500.30x = 73,686,090.79
  5. Step 5: Solve for x
    x = 73,686,090.79/13,500.30
  6. Step 6: Final answer
    x = 5,458.11

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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.