Home / 20,134.69-27,784.92-11,182.75

Finding the Fourth Proportional to 20,134.69, 27,784.92 and 11,182.75

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Solution

The fourth proportional to 20,134.69, 27,784.92 and 11,182.75 is: 15,431.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.69 : 27,784.92 = 11,182.75 : x
  2. Step 2: Convert to fraction form
    20,134.69/27,784.92 = 11,182.75/x
  3. Step 3: Cross multiply
    20,134.69x = 27,784.92 × 11,182.75
  4. Step 4: Simplify right side
    20,134.69x = 310,711,814.13
  5. Step 5: Solve for x
    x = 310,711,814.13/20,134.69
  6. Step 6: Final answer
    x = 15,431.67

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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.