Home / 47,999.24-71,990.65-12,930.70

Finding the Fourth Proportional to 47,999.24, 71,990.65 and 12,930.70

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Solution

The fourth proportional to 47,999.24, 71,990.65 and 12,930.70 is: 19,393.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,999.24 : 71,990.65 = 12,930.70 : x
  2. Step 2: Convert to fraction form
    47,999.24/71,990.65 = 12,930.70/x
  3. Step 3: Cross multiply
    47,999.24x = 71,990.65 × 12,930.70
  4. Step 4: Simplify right side
    47,999.24x = 930,889,497.96
  5. Step 5: Solve for x
    x = 930,889,497.96/47,999.24
  6. Step 6: Final answer
    x = 19,393.84

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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.