Home / 31,181.88-43,045.19-19,866.89

Finding the Fourth Proportional to 31,181.88, 43,045.19 and 19,866.89

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Solution

The fourth proportional to 31,181.88, 43,045.19 and 19,866.89 is: 27,425.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,181.88 : 43,045.19 = 19,866.89 : x
  2. Step 2: Convert to fraction form
    31,181.88/43,045.19 = 19,866.89/x
  3. Step 3: Cross multiply
    31,181.88x = 43,045.19 × 19,866.89
  4. Step 4: Simplify right side
    31,181.88x = 855,174,063.04
  5. Step 5: Solve for x
    x = 855,174,063.04/31,181.88
  6. Step 6: Final answer
    x = 27,425.35

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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.