Home / 20,725.45-28,601.11-11,294.01

Finding the Fourth Proportional to 20,725.45, 28,601.11 and 11,294.01

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Solution

The fourth proportional to 20,725.45, 28,601.11 and 11,294.01 is: 15,585.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.45 : 28,601.11 = 11,294.01 : x
  2. Step 2: Convert to fraction form
    20,725.45/28,601.11 = 11,294.01/x
  3. Step 3: Cross multiply
    20,725.45x = 28,601.11 × 11,294.01
  4. Step 4: Simplify right side
    20,725.45x = 323,021,222.35
  5. Step 5: Solve for x
    x = 323,021,222.35/20,725.45
  6. Step 6: Final answer
    x = 15,585.73

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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.