Home / 11,678.28-17,503.58-6,128.62

Finding the Fourth Proportional to 11,678.28, 17,503.58 and 6,128.62

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Solution

The fourth proportional to 11,678.28, 17,503.58 and 6,128.62 is: 9,185.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.28 : 17,503.58 = 6,128.62 : x
  2. Step 2: Convert to fraction form
    11,678.28/17,503.58 = 6,128.62/x
  3. Step 3: Cross multiply
    11,678.28x = 17,503.58 × 6,128.62
  4. Step 4: Simplify right side
    11,678.28x = 107,272,790.46
  5. Step 5: Solve for x
    x = 107,272,790.46/11,678.28
  6. Step 6: Final answer
    x = 9,185.67

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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.