Home / 28,589.30-39,438.72-19,507.85

Finding the Fourth Proportional to 28,589.30, 39,438.72 and 19,507.85

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Solution

The fourth proportional to 28,589.30, 39,438.72 and 19,507.85 is: 26,910.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,589.30 : 39,438.72 = 19,507.85 : x
  2. Step 2: Convert to fraction form
    28,589.30/39,438.72 = 19,507.85/x
  3. Step 3: Cross multiply
    28,589.30x = 39,438.72 × 19,507.85
  4. Step 4: Simplify right side
    28,589.30x = 769,364,633.95
  5. Step 5: Solve for x
    x = 769,364,633.95/28,589.30
  6. Step 6: Final answer
    x = 26,910.93

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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.