Home / 13,753.08-20,638.14-5,431.68

Finding the Fourth Proportional to 13,753.08, 20,638.14 and 5,431.68

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Solution

The fourth proportional to 13,753.08, 20,638.14 and 5,431.68 is: 8,150.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.08 : 20,638.14 = 5,431.68 : x
  2. Step 2: Convert to fraction form
    13,753.08/20,638.14 = 5,431.68/x
  3. Step 3: Cross multiply
    13,753.08x = 20,638.14 × 5,431.68
  4. Step 4: Simplify right side
    13,753.08x = 112,099,772.28
  5. Step 5: Solve for x
    x = 112,099,772.28/13,753.08
  6. Step 6: Final answer
    x = 8,150.88

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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.