Home / 20,091.62-30,128.46-9,564.65

Finding the Fourth Proportional to 20,091.62, 30,128.46 and 9,564.65

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Solution

The fourth proportional to 20,091.62, 30,128.46 and 9,564.65 is: 14,342.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.62 : 30,128.46 = 9,564.65 : x
  2. Step 2: Convert to fraction form
    20,091.62/30,128.46 = 9,564.65/x
  3. Step 3: Cross multiply
    20,091.62x = 30,128.46 × 9,564.65
  4. Step 4: Simplify right side
    20,091.62x = 288,168,024.30
  5. Step 5: Solve for x
    x = 288,168,024.30/20,091.62
  6. Step 6: Final answer
    x = 14,342.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.