Home / 13,443.08-20,163.60-5,438.35

Finding the Fourth Proportional to 13,443.08, 20,163.60 and 5,438.35

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Solution

The fourth proportional to 13,443.08, 20,163.60 and 5,438.35 is: 8,157.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.08 : 20,163.60 = 5,438.35 : x
  2. Step 2: Convert to fraction form
    13,443.08/20,163.60 = 5,438.35/x
  3. Step 3: Cross multiply
    13,443.08x = 20,163.60 × 5,438.35
  4. Step 4: Simplify right side
    13,443.08x = 109,656,714.06
  5. Step 5: Solve for x
    x = 109,656,714.06/13,443.08
  6. Step 6: Final answer
    x = 8,157.12

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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.