Home / 20,793.70-31,194.60-8,947.45

Finding the Fourth Proportional to 20,793.70, 31,194.60 and 8,947.45

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Solution

The fourth proportional to 20,793.70, 31,194.60 and 8,947.45 is: 13,422.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.70 : 31,194.60 = 8,947.45 : x
  2. Step 2: Convert to fraction form
    20,793.70/31,194.60 = 8,947.45/x
  3. Step 3: Cross multiply
    20,793.70x = 31,194.60 × 8,947.45
  4. Step 4: Simplify right side
    20,793.70x = 279,112,123.77
  5. Step 5: Solve for x
    x = 279,112,123.77/20,793.70
  6. Step 6: Final answer
    x = 13,422.92

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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.