Home / 20,653.35-30,980.31-5,070.96

Finding the Fourth Proportional to 20,653.35, 30,980.31 and 5,070.96

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Solution

The fourth proportional to 20,653.35, 30,980.31 and 5,070.96 is: 7,606.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.35 : 30,980.31 = 5,070.96 : x
  2. Step 2: Convert to fraction form
    20,653.35/30,980.31 = 5,070.96/x
  3. Step 3: Cross multiply
    20,653.35x = 30,980.31 × 5,070.96
  4. Step 4: Simplify right side
    20,653.35x = 157,099,912.80
  5. Step 5: Solve for x
    x = 157,099,912.80/20,653.35
  6. Step 6: Final answer
    x = 7,606.51

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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.