Home / 31,836.78-43,934.94-19,907.10

Finding the Fourth Proportional to 31,836.78, 43,934.94 and 19,907.10

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Solution

The fourth proportional to 31,836.78, 43,934.94 and 19,907.10 is: 27,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,836.78 : 43,934.94 = 19,907.10 : x
  2. Step 2: Convert to fraction form
    31,836.78/43,934.94 = 19,907.10/x
  3. Step 3: Cross multiply
    31,836.78x = 43,934.94 × 19,907.10
  4. Step 4: Simplify right side
    31,836.78x = 874,617,244.07
  5. Step 5: Solve for x
    x = 874,617,244.07/31,836.78
  6. Step 6: Final answer
    x = 27,471.91

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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.