Home / 31,283.85-43,137.12-19,935.37

Finding the Fourth Proportional to 31,283.85, 43,137.12 and 19,935.37

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Solution

The fourth proportional to 31,283.85, 43,137.12 and 19,935.37 is: 27,488.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,283.85 : 43,137.12 = 19,935.37 : x
  2. Step 2: Convert to fraction form
    31,283.85/43,137.12 = 19,935.37/x
  3. Step 3: Cross multiply
    31,283.85x = 43,137.12 × 19,935.37
  4. Step 4: Simplify right side
    31,283.85x = 859,954,585.92
  5. Step 5: Solve for x
    x = 859,954,585.92/31,283.85
  6. Step 6: Final answer
    x = 27,488.77

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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.