Home / 31,421.40-43,350.74-19,480.44

Finding the Fourth Proportional to 31,421.40, 43,350.74 and 19,480.44

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Solution

The fourth proportional to 31,421.40, 43,350.74 and 19,480.44 is: 26,876.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.40 : 43,350.74 = 19,480.44 : x
  2. Step 2: Convert to fraction form
    31,421.40/43,350.74 = 19,480.44/x
  3. Step 3: Cross multiply
    31,421.40x = 43,350.74 × 19,480.44
  4. Step 4: Simplify right side
    31,421.40x = 844,491,489.53
  5. Step 5: Solve for x
    x = 844,491,489.53/31,421.40
  6. Step 6: Final answer
    x = 26,876.32

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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.