Home / 31,649.12-43,684.44-19,705.46

Finding the Fourth Proportional to 31,649.12, 43,684.44 and 19,705.46

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Solution

The fourth proportional to 31,649.12, 43,684.44 and 19,705.46 is: 27,198.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,649.12 : 43,684.44 = 19,705.46 : x
  2. Step 2: Convert to fraction form
    31,649.12/43,684.44 = 19,705.46/x
  3. Step 3: Cross multiply
    31,649.12x = 43,684.44 × 19,705.46
  4. Step 4: Simplify right side
    31,649.12x = 860,821,985.04
  5. Step 5: Solve for x
    x = 860,821,985.04/31,649.12
  6. Step 6: Final answer
    x = 27,198.92

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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.