Home / 31,215.07-43,073.82-17,785.99

Finding the Fourth Proportional to 31,215.07, 43,073.82 and 17,785.99

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Solution

The fourth proportional to 31,215.07, 43,073.82 and 17,785.99 is: 24,542.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,215.07 : 43,073.82 = 17,785.99 : x
  2. Step 2: Convert to fraction form
    31,215.07/43,073.82 = 17,785.99/x
  3. Step 3: Cross multiply
    31,215.07x = 43,073.82 × 17,785.99
  4. Step 4: Simplify right side
    31,215.07x = 766,110,531.78
  5. Step 5: Solve for x
    x = 766,110,531.78/31,215.07
  6. Step 6: Final answer
    x = 24,542.97

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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.