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Finding the Fourth Proportional to 19,279.50, 28,919.25 and 6,967.50

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Solution

The fourth proportional to 19,279.50, 28,919.25 and 6,967.50 is: 10,451.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,279.50 : 28,919.25 = 6,967.50 : x
  2. Step 2: Convert to fraction form
    19,279.50/28,919.25 = 6,967.50/x
  3. Step 3: Cross multiply
    19,279.50x = 28,919.25 × 6,967.50
  4. Step 4: Simplify right side
    19,279.50x = 201,494,874.38
  5. Step 5: Solve for x
    x = 201,494,874.38/19,279.50
  6. Step 6: Final answer
    x = 10,451.25

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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.