Home / 31,419.50-43,354.07-18,667.96

Finding the Fourth Proportional to 31,419.50, 43,354.07 and 18,667.96

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Solution

The fourth proportional to 31,419.50, 43,354.07 and 18,667.96 is: 25,758.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,419.50 : 43,354.07 = 18,667.96 : x
  2. Step 2: Convert to fraction form
    31,419.50/43,354.07 = 18,667.96/x
  3. Step 3: Cross multiply
    31,419.50x = 43,354.07 × 18,667.96
  4. Step 4: Simplify right side
    31,419.50x = 809,332,156.74
  5. Step 5: Solve for x
    x = 809,332,156.74/31,419.50
  6. Step 6: Final answer
    x = 25,758.91

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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.