Home / 21,250.14-31,835.22-12,458.94

Finding the Fourth Proportional to 21,250.14, 31,835.22 and 12,458.94

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Solution

The fourth proportional to 21,250.14, 31,835.22 and 12,458.94 is: 18,664.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.14 : 31,835.22 = 12,458.94 : x
  2. Step 2: Convert to fraction form
    21,250.14/31,835.22 = 12,458.94/x
  3. Step 3: Cross multiply
    21,250.14x = 31,835.22 × 12,458.94
  4. Step 4: Simplify right side
    21,250.14x = 396,633,095.87
  5. Step 5: Solve for x
    x = 396,633,095.87/21,250.14
  6. Step 6: Final answer
    x = 18,664.96

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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.