Home / 21,274.51-31,931.43-10,751.92

Finding the Fourth Proportional to 21,274.51, 31,931.43 and 10,751.92

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Solution

The fourth proportional to 21,274.51, 31,931.43 and 10,751.92 is: 16,137.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.51 : 31,931.43 = 10,751.92 : x
  2. Step 2: Convert to fraction form
    21,274.51/31,931.43 = 10,751.92/x
  3. Step 3: Cross multiply
    21,274.51x = 31,931.43 × 10,751.92
  4. Step 4: Simplify right side
    21,274.51x = 343,324,180.85
  5. Step 5: Solve for x
    x = 343,324,180.85/21,274.51
  6. Step 6: Final answer
    x = 16,137.82

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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.