Home / 31,647.92-43,678.48-18,218.88

Finding the Fourth Proportional to 31,647.92, 43,678.48 and 18,218.88

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Solution

The fourth proportional to 31,647.92, 43,678.48 and 18,218.88 is: 25,144.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,647.92 : 43,678.48 = 18,218.88 : x
  2. Step 2: Convert to fraction form
    31,647.92/43,678.48 = 18,218.88/x
  3. Step 3: Cross multiply
    31,647.92x = 43,678.48 × 18,218.88
  4. Step 4: Simplify right side
    31,647.92x = 795,772,985.70
  5. Step 5: Solve for x
    x = 795,772,985.70/31,647.92
  6. Step 6: Final answer
    x = 25,144.56

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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.