Home / 20,618.15-30,912.08-6,570.09

Finding the Fourth Proportional to 20,618.15, 30,912.08 and 6,570.09

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Solution

The fourth proportional to 20,618.15, 30,912.08 and 6,570.09 is: 9,850.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.15 : 30,912.08 = 6,570.09 : x
  2. Step 2: Convert to fraction form
    20,618.15/30,912.08 = 6,570.09/x
  3. Step 3: Cross multiply
    20,618.15x = 30,912.08 × 6,570.09
  4. Step 4: Simplify right side
    20,618.15x = 203,095,023.55
  5. Step 5: Solve for x
    x = 203,095,023.55/20,618.15
  6. Step 6: Final answer
    x = 9,850.31

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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.