Home / 31,431.24-43,383.33-19,487.79

Finding the Fourth Proportional to 31,431.24, 43,383.33 and 19,487.79

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Solution

The fourth proportional to 31,431.24, 43,383.33 and 19,487.79 is: 26,898.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.24 : 43,383.33 = 19,487.79 : x
  2. Step 2: Convert to fraction form
    31,431.24/43,383.33 = 19,487.79/x
  3. Step 3: Cross multiply
    31,431.24x = 43,383.33 × 19,487.79
  4. Step 4: Simplify right side
    31,431.24x = 845,445,224.54
  5. Step 5: Solve for x
    x = 845,445,224.54/31,431.24
  6. Step 6: Final answer
    x = 26,898.25

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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.