Home / 21,285.09-29,367.27-13,735.80

Finding the Fourth Proportional to 21,285.09, 29,367.27 and 13,735.80

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Solution

The fourth proportional to 21,285.09, 29,367.27 and 13,735.80 is: 18,951.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.09 : 29,367.27 = 13,735.80 : x
  2. Step 2: Convert to fraction form
    21,285.09/29,367.27 = 13,735.80/x
  3. Step 3: Cross multiply
    21,285.09x = 29,367.27 × 13,735.80
  4. Step 4: Simplify right side
    21,285.09x = 403,382,947.27
  5. Step 5: Solve for x
    x = 403,382,947.27/21,285.09
  6. Step 6: Final answer
    x = 18,951.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.