Home / 55,175.12-82,763.90-13,622.12

Finding the Fourth Proportional to 55,175.12, 82,763.90 and 13,622.12

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Solution

The fourth proportional to 55,175.12, 82,763.90 and 13,622.12 is: 20,433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,175.12 : 82,763.90 = 13,622.12 : x
  2. Step 2: Convert to fraction form
    55,175.12/82,763.90 = 13,622.12/x
  3. Step 3: Cross multiply
    55,175.12x = 82,763.90 × 13,622.12
  4. Step 4: Simplify right side
    55,175.12x = 1,127,419,777.47
  5. Step 5: Solve for x
    x = 1,127,419,777.47/55,175.12
  6. Step 6: Final answer
    x = 20,433.48

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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.