Home / 31,455-43,408.20-17,308.15

Finding the Fourth Proportional to 31,455, 43,408.20 and 17,308.15

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Solution

The fourth proportional to 31,455, 43,408.20 and 17,308.15 is: 23,885.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455 : 43,408.20 = 17,308.15 : x
  2. Step 2: Convert to fraction form
    31,455/43,408.20 = 17,308.15/x
  3. Step 3: Cross multiply
    31,455x = 43,408.20 × 17,308.15
  4. Step 4: Simplify right side
    31,455x = 751,315,593.22
  5. Step 5: Solve for x
    x = 751,315,593.22/31,455
  6. Step 6: Final answer
    x = 23,885.41

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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.