Home / 31,866.75-43,987.05-19,291.50

Finding the Fourth Proportional to 31,866.75, 43,987.05 and 19,291.50

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Solution

The fourth proportional to 31,866.75, 43,987.05 and 19,291.50 is: 26,628.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,866.75 : 43,987.05 = 19,291.50 : x
  2. Step 2: Convert to fraction form
    31,866.75/43,987.05 = 19,291.50/x
  3. Step 3: Cross multiply
    31,866.75x = 43,987.05 × 19,291.50
  4. Step 4: Simplify right side
    31,866.75x = 848,576,175.08
  5. Step 5: Solve for x
    x = 848,576,175.08/31,866.75
  6. Step 6: Final answer
    x = 26,628.89

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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.