Home / 21,041.37-31,553.82-7,886.57

Finding the Fourth Proportional to 21,041.37, 31,553.82 and 7,886.57

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Solution

The fourth proportional to 21,041.37, 31,553.82 and 7,886.57 is: 11,826.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.37 : 31,553.82 = 7,886.57 : x
  2. Step 2: Convert to fraction form
    21,041.37/31,553.82 = 7,886.57/x
  3. Step 3: Cross multiply
    21,041.37x = 31,553.82 × 7,886.57
  4. Step 4: Simplify right side
    21,041.37x = 248,851,252.43
  5. Step 5: Solve for x
    x = 248,851,252.43/21,041.37
  6. Step 6: Final answer
    x = 11,826.76

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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.