Home / 31,515.34-43,489.45-19,578.46

Finding the Fourth Proportional to 31,515.34, 43,489.45 and 19,578.46

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Solution

The fourth proportional to 31,515.34, 43,489.45 and 19,578.46 is: 27,017.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,515.34 : 43,489.45 = 19,578.46 : x
  2. Step 2: Convert to fraction form
    31,515.34/43,489.45 = 19,578.46/x
  3. Step 3: Cross multiply
    31,515.34x = 43,489.45 × 19,578.46
  4. Step 4: Simplify right side
    31,515.34x = 851,456,457.25
  5. Step 5: Solve for x
    x = 851,456,457.25/31,515.34
  6. Step 6: Final answer
    x = 27,017.21

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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.