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Finding the Fourth Proportional to 47,951.76, 71,926.02 and 12,889.56

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Solution

The fourth proportional to 47,951.76, 71,926.02 and 12,889.56 is: 19,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,951.76 : 71,926.02 = 12,889.56 : x
  2. Step 2: Convert to fraction form
    47,951.76/71,926.02 = 12,889.56/x
  3. Step 3: Cross multiply
    47,951.76x = 71,926.02 × 12,889.56
  4. Step 4: Simplify right side
    47,951.76x = 927,094,750.35
  5. Step 5: Solve for x
    x = 927,094,750.35/47,951.76
  6. Step 6: Final answer
    x = 19,333.90

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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.