Home / 31,618.48-43,633.44-18,189.40

Finding the Fourth Proportional to 31,618.48, 43,633.44 and 18,189.40

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Solution

The fourth proportional to 31,618.48, 43,633.44 and 18,189.40 is: 25,101.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,618.48 : 43,633.44 = 18,189.40 : x
  2. Step 2: Convert to fraction form
    31,618.48/43,633.44 = 18,189.40/x
  3. Step 3: Cross multiply
    31,618.48x = 43,633.44 × 18,189.40
  4. Step 4: Simplify right side
    31,618.48x = 793,666,093.54
  5. Step 5: Solve for x
    x = 793,666,093.54/31,618.48
  6. Step 6: Final answer
    x = 25,101.34

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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.