Home / 31,829.67-47,725.88-12,109.68

Finding the Fourth Proportional to 31,829.67, 47,725.88 and 12,109.68

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Solution

The fourth proportional to 31,829.67, 47,725.88 and 12,109.68 is: 18,157.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,829.67 : 47,725.88 = 12,109.68 : x
  2. Step 2: Convert to fraction form
    31,829.67/47,725.88 = 12,109.68/x
  3. Step 3: Cross multiply
    31,829.67x = 47,725.88 × 12,109.68
  4. Step 4: Simplify right side
    31,829.67x = 577,945,073.97
  5. Step 5: Solve for x
    x = 577,945,073.97/31,829.67
  6. Step 6: Final answer
    x = 18,157.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.