Home / 31,221.21-43,083-19,284.78

Finding the Fourth Proportional to 31,221.21, 43,083 and 19,284.78

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Solution

The fourth proportional to 31,221.21, 43,083 and 19,284.78 is: 26,611.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,221.21 : 43,083 = 19,284.78 : x
  2. Step 2: Convert to fraction form
    31,221.21/43,083 = 19,284.78/x
  3. Step 3: Cross multiply
    31,221.21x = 43,083 × 19,284.78
  4. Step 4: Simplify right side
    31,221.21x = 830,846,176.74
  5. Step 5: Solve for x
    x = 830,846,176.74/31,221.21
  6. Step 6: Final answer
    x = 26,611.59

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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.