Home / 11,421.71-17,128.91-3,628.70

Finding the Fourth Proportional to 11,421.71, 17,128.91 and 3,628.70

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Solution

The fourth proportional to 11,421.71, 17,128.91 and 3,628.70 is: 5,441.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.71 : 17,128.91 = 3,628.70 : x
  2. Step 2: Convert to fraction form
    11,421.71/17,128.91 = 3,628.70/x
  3. Step 3: Cross multiply
    11,421.71x = 17,128.91 × 3,628.70
  4. Step 4: Simplify right side
    11,421.71x = 62,155,590.07
  5. Step 5: Solve for x
    x = 62,155,590.07/11,421.71
  6. Step 6: Final answer
    x = 5,441.88

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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.