Home / 21,029.83-31,535.51-7,872.97

Finding the Fourth Proportional to 21,029.83, 31,535.51 and 7,872.97

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Solution

The fourth proportional to 21,029.83, 31,535.51 and 7,872.97 is: 11,806.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029.83 : 31,535.51 = 7,872.97 : x
  2. Step 2: Convert to fraction form
    21,029.83/31,535.51 = 7,872.97/x
  3. Step 3: Cross multiply
    21,029.83x = 31,535.51 × 7,872.97
  4. Step 4: Simplify right side
    21,029.83x = 248,278,124.16
  5. Step 5: Solve for x
    x = 248,278,124.16/21,029.83
  6. Step 6: Final answer
    x = 11,806.00

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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.