Home / 21,162.51-31,750.35-8,683.55

Finding the Fourth Proportional to 21,162.51, 31,750.35 and 8,683.55

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Solution

The fourth proportional to 21,162.51, 31,750.35 and 8,683.55 is: 13,028.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.51 : 31,750.35 = 8,683.55 : x
  2. Step 2: Convert to fraction form
    21,162.51/31,750.35 = 8,683.55/x
  3. Step 3: Cross multiply
    21,162.51x = 31,750.35 × 8,683.55
  4. Step 4: Simplify right side
    21,162.51x = 275,705,791.43
  5. Step 5: Solve for x
    x = 275,705,791.43/21,162.51
  6. Step 6: Final answer
    x = 13,028.03

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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.