Home / 20,850.51-31,277.69-6,810.62

Finding the Fourth Proportional to 20,850.51, 31,277.69 and 6,810.62

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Solution

The fourth proportional to 20,850.51, 31,277.69 and 6,810.62 is: 10,216.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.51 : 31,277.69 = 6,810.62 : x
  2. Step 2: Convert to fraction form
    20,850.51/31,277.69 = 6,810.62/x
  3. Step 3: Cross multiply
    20,850.51x = 31,277.69 × 6,810.62
  4. Step 4: Simplify right side
    20,850.51x = 213,020,270.63
  5. Step 5: Solve for x
    x = 213,020,270.63/20,850.51
  6. Step 6: Final answer
    x = 10,216.55

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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.