Home / 31,877.36-43,992.12-18,449.20

Finding the Fourth Proportional to 31,877.36, 43,992.12 and 18,449.20

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Solution

The fourth proportional to 31,877.36, 43,992.12 and 18,449.20 is: 25,460.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,877.36 : 43,992.12 = 18,449.20 : x
  2. Step 2: Convert to fraction form
    31,877.36/43,992.12 = 18,449.20/x
  3. Step 3: Cross multiply
    31,877.36x = 43,992.12 × 18,449.20
  4. Step 4: Simplify right side
    31,877.36x = 811,619,420.30
  5. Step 5: Solve for x
    x = 811,619,420.30/31,877.36
  6. Step 6: Final answer
    x = 25,460.68

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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.