Home / 23,172.77-31,961.43-15,212.09

Finding the Fourth Proportional to 23,172.77, 31,961.43 and 15,212.09

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Solution

The fourth proportional to 23,172.77, 31,961.43 and 15,212.09 is: 20,981.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,172.77 : 31,961.43 = 15,212.09 : x
  2. Step 2: Convert to fraction form
    23,172.77/31,961.43 = 15,212.09/x
  3. Step 3: Cross multiply
    23,172.77x = 31,961.43 × 15,212.09
  4. Step 4: Simplify right side
    23,172.77x = 486,199,989.88
  5. Step 5: Solve for x
    x = 486,199,989.88/23,172.77
  6. Step 6: Final answer
    x = 20,981.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.