Home / 31,476.72-47,217.60-8,103.12

Finding the Fourth Proportional to 31,476.72, 47,217.60 and 8,103.12

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Solution

The fourth proportional to 31,476.72, 47,217.60 and 8,103.12 is: 12,155.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,476.72 : 47,217.60 = 8,103.12 : x
  2. Step 2: Convert to fraction form
    31,476.72/47,217.60 = 8,103.12/x
  3. Step 3: Cross multiply
    31,476.72x = 47,217.60 × 8,103.12
  4. Step 4: Simplify right side
    31,476.72x = 382,609,878.91
  5. Step 5: Solve for x
    x = 382,609,878.91/31,476.72
  6. Step 6: Final answer
    x = 12,155.33

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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.