Home / 20,580.57-30,870.63-4,998.21

Finding the Fourth Proportional to 20,580.57, 30,870.63 and 4,998.21

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Solution

The fourth proportional to 20,580.57, 30,870.63 and 4,998.21 is: 7,497.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.57 : 30,870.63 = 4,998.21 : x
  2. Step 2: Convert to fraction form
    20,580.57/30,870.63 = 4,998.21/x
  3. Step 3: Cross multiply
    20,580.57x = 30,870.63 × 4,998.21
  4. Step 4: Simplify right side
    20,580.57x = 154,297,891.57
  5. Step 5: Solve for x
    x = 154,297,891.57/20,580.57
  6. Step 6: Final answer
    x = 7,497.26

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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.