Home / 31,820.99-43,913.21-19,891.35

Finding the Fourth Proportional to 31,820.99, 43,913.21 and 19,891.35

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Solution

The fourth proportional to 31,820.99, 43,913.21 and 19,891.35 is: 27,450.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,820.99 : 43,913.21 = 19,891.35 : x
  2. Step 2: Convert to fraction form
    31,820.99/43,913.21 = 19,891.35/x
  3. Step 3: Cross multiply
    31,820.99x = 43,913.21 × 19,891.35
  4. Step 4: Simplify right side
    31,820.99x = 873,492,930.28
  5. Step 5: Solve for x
    x = 873,492,930.28/31,820.99
  6. Step 6: Final answer
    x = 27,450.22

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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.