Home / 20,641.40-30,961.19-14,382.94

Finding the Fourth Proportional to 20,641.40, 30,961.19 and 14,382.94

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Solution

The fourth proportional to 20,641.40, 30,961.19 and 14,382.94 is: 21,573.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.40 : 30,961.19 = 14,382.94 : x
  2. Step 2: Convert to fraction form
    20,641.40/30,961.19 = 14,382.94/x
  3. Step 3: Cross multiply
    20,641.40x = 30,961.19 × 14,382.94
  4. Step 4: Simplify right side
    20,641.40x = 445,312,896.65
  5. Step 5: Solve for x
    x = 445,312,896.65/20,641.40
  6. Step 6: Final answer
    x = 21,573.77

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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.