Home / 28,422.20-39,221.42-15,846.84

Finding the Fourth Proportional to 28,422.20, 39,221.42 and 15,846.84

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Solution

The fourth proportional to 28,422.20, 39,221.42 and 15,846.84 is: 21,867.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.20 : 39,221.42 = 15,846.84 : x
  2. Step 2: Convert to fraction form
    28,422.20/39,221.42 = 15,846.84/x
  3. Step 3: Cross multiply
    28,422.20x = 39,221.42 × 15,846.84
  4. Step 4: Simplify right side
    28,422.20x = 621,535,567.31
  5. Step 5: Solve for x
    x = 621,535,567.31/28,422.20
  6. Step 6: Final answer
    x = 21,867.96

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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.