Home / 20,725.75-28,601.54-11,294.32

Finding the Fourth Proportional to 20,725.75, 28,601.54 and 11,294.32

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Solution

The fourth proportional to 20,725.75, 28,601.54 and 11,294.32 is: 15,586.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.75 : 28,601.54 = 11,294.32 : x
  2. Step 2: Convert to fraction form
    20,725.75/28,601.54 = 11,294.32/x
  3. Step 3: Cross multiply
    20,725.75x = 28,601.54 × 11,294.32
  4. Step 4: Simplify right side
    20,725.75x = 323,034,745.77
  5. Step 5: Solve for x
    x = 323,034,745.77/20,725.75
  6. Step 6: Final answer
    x = 15,586.15

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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.