Home / 31,289.79-43,171.25-17,856.21

Finding the Fourth Proportional to 31,289.79, 43,171.25 and 17,856.21

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Solution

The fourth proportional to 31,289.79, 43,171.25 and 17,856.21 is: 24,636.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,289.79 : 43,171.25 = 17,856.21 : x
  2. Step 2: Convert to fraction form
    31,289.79/43,171.25 = 17,856.21/x
  3. Step 3: Cross multiply
    31,289.79x = 43,171.25 × 17,856.21
  4. Step 4: Simplify right side
    31,289.79x = 770,874,816.68
  5. Step 5: Solve for x
    x = 770,874,816.68/31,289.79
  6. Step 6: Final answer
    x = 24,636.62

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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.