Home / 21,069.45-31,596.48-7,918.29

Finding the Fourth Proportional to 21,069.45, 31,596.48 and 7,918.29

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Solution

The fourth proportional to 21,069.45, 31,596.48 and 7,918.29 is: 11,874.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.45 : 31,596.48 = 7,918.29 : x
  2. Step 2: Convert to fraction form
    21,069.45/31,596.48 = 7,918.29/x
  3. Step 3: Cross multiply
    21,069.45x = 31,596.48 × 7,918.29
  4. Step 4: Simplify right side
    21,069.45x = 250,190,091.62
  5. Step 5: Solve for x
    x = 250,190,091.62/21,069.45
  6. Step 6: Final answer
    x = 11,874.54

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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.