Home / 20,738.46-28,619.07-11,307

Finding the Fourth Proportional to 20,738.46, 28,619.07 and 11,307

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Solution

The fourth proportional to 20,738.46, 28,619.07 and 11,307 is: 15,603.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.46 : 28,619.07 = 11,307 : x
  2. Step 2: Convert to fraction form
    20,738.46/28,619.07 = 11,307/x
  3. Step 3: Cross multiply
    20,738.46x = 28,619.07 × 11,307
  4. Step 4: Simplify right side
    20,738.46x = 323,595,824.49
  5. Step 5: Solve for x
    x = 323,595,824.49/20,738.46
  6. Step 6: Final answer
    x = 15,603.66

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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.