Home / 20,584.37-28,416.24-13,790.09

Finding the Fourth Proportional to 20,584.37, 28,416.24 and 13,790.09

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Solution

The fourth proportional to 20,584.37, 28,416.24 and 13,790.09 is: 19,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.37 : 28,416.24 = 13,790.09 : x
  2. Step 2: Convert to fraction form
    20,584.37/28,416.24 = 13,790.09/x
  3. Step 3: Cross multiply
    20,584.37x = 28,416.24 × 13,790.09
  4. Step 4: Simplify right side
    20,584.37x = 391,862,507.06
  5. Step 5: Solve for x
    x = 391,862,507.06/20,584.37
  6. Step 6: Final answer
    x = 19,036.90

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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.