Home / 31,383.52-43,316.48-20,186.08

Finding the Fourth Proportional to 31,383.52, 43,316.48 and 20,186.08

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Solution

The fourth proportional to 31,383.52, 43,316.48 and 20,186.08 is: 27,861.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,383.52 : 43,316.48 = 20,186.08 : x
  2. Step 2: Convert to fraction form
    31,383.52/43,316.48 = 20,186.08/x
  3. Step 3: Cross multiply
    31,383.52x = 43,316.48 × 20,186.08
  4. Step 4: Simplify right side
    31,383.52x = 874,389,930.60
  5. Step 5: Solve for x
    x = 874,389,930.60/31,383.52
  6. Step 6: Final answer
    x = 27,861.44

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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.