Home / 21,972.51-32,971.73-8,131.23

Finding the Fourth Proportional to 21,972.51, 32,971.73 and 8,131.23

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Solution

The fourth proportional to 21,972.51, 32,971.73 and 8,131.23 is: 12,201.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.51 : 32,971.73 = 8,131.23 : x
  2. Step 2: Convert to fraction form
    21,972.51/32,971.73 = 8,131.23/x
  3. Step 3: Cross multiply
    21,972.51x = 32,971.73 × 8,131.23
  4. Step 4: Simplify right side
    21,972.51x = 268,100,679.47
  5. Step 5: Solve for x
    x = 268,100,679.47/21,972.51
  6. Step 6: Final answer
    x = 12,201.64

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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.