Home / 47,778.80-71,671.44-12,717.68

Finding the Fourth Proportional to 47,778.80, 71,671.44 and 12,717.68

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Solution

The fourth proportional to 47,778.80, 71,671.44 and 12,717.68 is: 19,077.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,778.80 : 71,671.44 = 12,717.68 : x
  2. Step 2: Convert to fraction form
    47,778.80/71,671.44 = 12,717.68/x
  3. Step 3: Cross multiply
    47,778.80x = 71,671.44 × 12,717.68
  4. Step 4: Simplify right side
    47,778.80x = 911,494,439.06
  5. Step 5: Solve for x
    x = 911,494,439.06/47,778.80
  6. Step 6: Final answer
    x = 19,077.38

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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.