Home / 20,754.12-31,120.20-9,053.64

Finding the Fourth Proportional to 20,754.12, 31,120.20 and 9,053.64

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Solution

The fourth proportional to 20,754.12, 31,120.20 and 9,053.64 is: 13,575.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.12 : 31,120.20 = 9,053.64 : x
  2. Step 2: Convert to fraction form
    20,754.12/31,120.20 = 9,053.64/x
  3. Step 3: Cross multiply
    20,754.12x = 31,120.20 × 9,053.64
  4. Step 4: Simplify right side
    20,754.12x = 281,751,087.53
  5. Step 5: Solve for x
    x = 281,751,087.53/20,754.12
  6. Step 6: Final answer
    x = 13,575.67

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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.