Home / 21,240.36-31,847.88-8,093.76

Finding the Fourth Proportional to 21,240.36, 31,847.88 and 8,093.76

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Solution

The fourth proportional to 21,240.36, 31,847.88 and 8,093.76 is: 12,135.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.36 : 31,847.88 = 8,093.76 : x
  2. Step 2: Convert to fraction form
    21,240.36/31,847.88 = 8,093.76/x
  3. Step 3: Cross multiply
    21,240.36x = 31,847.88 × 8,093.76
  4. Step 4: Simplify right side
    21,240.36x = 257,769,097.23
  5. Step 5: Solve for x
    x = 257,769,097.23/21,240.36
  6. Step 6: Final answer
    x = 12,135.82

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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.