Home / 47,999.40-71,989.86-12,930.24

Finding the Fourth Proportional to 47,999.40, 71,989.86 and 12,930.24

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Solution

The fourth proportional to 47,999.40, 71,989.86 and 12,930.24 is: 19,392.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,999.40 : 71,989.86 = 12,930.24 : x
  2. Step 2: Convert to fraction form
    47,999.40/71,989.86 = 12,930.24/x
  3. Step 3: Cross multiply
    47,999.40x = 71,989.86 × 12,930.24
  4. Step 4: Simplify right side
    47,999.40x = 930,846,167.37
  5. Step 5: Solve for x
    x = 930,846,167.37/47,999.40
  6. Step 6: Final answer
    x = 19,392.87

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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.