Home / 31,917.12-47,878.88-12,212.25

Finding the Fourth Proportional to 31,917.12, 47,878.88 and 12,212.25

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Solution

The fourth proportional to 31,917.12, 47,878.88 and 12,212.25 is: 18,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,917.12 : 47,878.88 = 12,212.25 : x
  2. Step 2: Convert to fraction form
    31,917.12/47,878.88 = 12,212.25/x
  3. Step 3: Cross multiply
    31,917.12x = 47,878.88 × 12,212.25
  4. Step 4: Simplify right side
    31,917.12x = 584,708,791.22
  5. Step 5: Solve for x
    x = 584,708,791.22/31,917.12
  6. Step 6: Final answer
    x = 18,319.60

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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.