Home / 20,578.47-28,396.61-11,626.75

Finding the Fourth Proportional to 20,578.47, 28,396.61 and 11,626.75

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Solution

The fourth proportional to 20,578.47, 28,396.61 and 11,626.75 is: 16,043.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.47 : 28,396.61 = 11,626.75 : x
  2. Step 2: Convert to fraction form
    20,578.47/28,396.61 = 11,626.75/x
  3. Step 3: Cross multiply
    20,578.47x = 28,396.61 × 11,626.75
  4. Step 4: Simplify right side
    20,578.47x = 330,160,227.18
  5. Step 5: Solve for x
    x = 330,160,227.18/20,578.47
  6. Step 6: Final answer
    x = 16,043.96

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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.