Home / 20,080.53-30,118.21-5,290.58

Finding the Fourth Proportional to 20,080.53, 30,118.21 and 5,290.58

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Solution

The fourth proportional to 20,080.53, 30,118.21 and 5,290.58 is: 7,935.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.53 : 30,118.21 = 5,290.58 : x
  2. Step 2: Convert to fraction form
    20,080.53/30,118.21 = 5,290.58/x
  3. Step 3: Cross multiply
    20,080.53x = 30,118.21 × 5,290.58
  4. Step 4: Simplify right side
    20,080.53x = 159,342,861.53
  5. Step 5: Solve for x
    x = 159,342,861.53/20,080.53
  6. Step 6: Final answer
    x = 7,935.19

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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.