Home / 28,535.36-39,375.36-15,786.86

Finding the Fourth Proportional to 28,535.36, 39,375.36 and 15,786.86

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Solution

The fourth proportional to 28,535.36, 39,375.36 and 15,786.86 is: 21,783.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.36 : 39,375.36 = 15,786.86 : x
  2. Step 2: Convert to fraction form
    28,535.36/39,375.36 = 15,786.86/x
  3. Step 3: Cross multiply
    28,535.36x = 39,375.36 × 15,786.86
  4. Step 4: Simplify right side
    28,535.36x = 621,613,098.89
  5. Step 5: Solve for x
    x = 621,613,098.89/28,535.36
  6. Step 6: Final answer
    x = 21,783.96

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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.