Home / 31,638.24-47,462.82-12,928.44

Finding the Fourth Proportional to 31,638.24, 47,462.82 and 12,928.44

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Solution

The fourth proportional to 31,638.24, 47,462.82 and 12,928.44 is: 19,394.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,638.24 : 47,462.82 = 12,928.44 : x
  2. Step 2: Convert to fraction form
    31,638.24/47,462.82 = 12,928.44/x
  3. Step 3: Cross multiply
    31,638.24x = 47,462.82 × 12,928.44
  4. Step 4: Simplify right side
    31,638.24x = 613,620,220.60
  5. Step 5: Solve for x
    x = 613,620,220.60/31,638.24
  6. Step 6: Final answer
    x = 19,394.89

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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.