Home / 20,738.26-28,618.95-11,306.62

Finding the Fourth Proportional to 20,738.26, 28,618.95 and 11,306.62

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Solution

The fourth proportional to 20,738.26, 28,618.95 and 11,306.62 is: 15,603.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.26 : 28,618.95 = 11,306.62 : x
  2. Step 2: Convert to fraction form
    20,738.26/28,618.95 = 11,306.62/x
  3. Step 3: Cross multiply
    20,738.26x = 28,618.95 × 11,306.62
  4. Step 4: Simplify right side
    20,738.26x = 323,583,592.45
  5. Step 5: Solve for x
    x = 323,583,592.45/20,738.26
  6. Step 6: Final answer
    x = 15,603.22

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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.