Home / 15,858.35-21,863.77-13,644.01

Finding the Fourth Proportional to 15,858.35, 21,863.77 and 13,644.01

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Solution

The fourth proportional to 15,858.35, 21,863.77 and 13,644.01 is: 18,810.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,858.35 : 21,863.77 = 13,644.01 : x
  2. Step 2: Convert to fraction form
    15,858.35/21,863.77 = 13,644.01/x
  3. Step 3: Cross multiply
    15,858.35x = 21,863.77 × 13,644.01
  4. Step 4: Simplify right side
    15,858.35x = 298,309,496.52
  5. Step 5: Solve for x
    x = 298,309,496.52/15,858.35
  6. Step 6: Final answer
    x = 18,810.88

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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.