Home / 28,808.70-39,757.55-16,872.95

Finding the Fourth Proportional to 28,808.70, 39,757.55 and 16,872.95

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Solution

The fourth proportional to 28,808.70, 39,757.55 and 16,872.95 is: 23,285.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,808.70 : 39,757.55 = 16,872.95 : x
  2. Step 2: Convert to fraction form
    28,808.70/39,757.55 = 16,872.95/x
  3. Step 3: Cross multiply
    28,808.70x = 39,757.55 × 16,872.95
  4. Step 4: Simplify right side
    28,808.70x = 670,826,870.12
  5. Step 5: Solve for x
    x = 670,826,870.12/28,808.70
  6. Step 6: Final answer
    x = 23,285.57

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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.