Home / 28,454.30-39,269.11-15,709.94

Finding the Fourth Proportional to 28,454.30, 39,269.11 and 15,709.94

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Solution

The fourth proportional to 28,454.30, 39,269.11 and 15,709.94 is: 21,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.30 : 39,269.11 = 15,709.94 : x
  2. Step 2: Convert to fraction form
    28,454.30/39,269.11 = 15,709.94/x
  3. Step 3: Cross multiply
    28,454.30x = 39,269.11 × 15,709.94
  4. Step 4: Simplify right side
    28,454.30x = 616,915,361.95
  5. Step 5: Solve for x
    x = 616,915,361.95/28,454.30
  6. Step 6: Final answer
    x = 21,680.92

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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.