Home / 31,839.09-43,924.31-19,881.67

Finding the Fourth Proportional to 31,839.09, 43,924.31 and 19,881.67

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Solution

The fourth proportional to 31,839.09, 43,924.31 and 19,881.67 is: 27,428.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,839.09 : 43,924.31 = 19,881.67 : x
  2. Step 2: Convert to fraction form
    31,839.09/43,924.31 = 19,881.67/x
  3. Step 3: Cross multiply
    31,839.09x = 43,924.31 × 19,881.67
  4. Step 4: Simplify right side
    31,839.09x = 873,288,636.40
  5. Step 5: Solve for x
    x = 873,288,636.40/31,839.09
  6. Step 6: Final answer
    x = 27,428.19

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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.