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Finding the Fourth Proportional to 19,253.88, 28,878.60 and 5,213.07

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Solution

The fourth proportional to 19,253.88, 28,878.60 and 5,213.07 is: 7,819.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,253.88 : 28,878.60 = 5,213.07 : x
  2. Step 2: Convert to fraction form
    19,253.88/28,878.60 = 5,213.07/x
  3. Step 3: Cross multiply
    19,253.88x = 28,878.60 × 5,213.07
  4. Step 4: Simplify right side
    19,253.88x = 150,546,163.30
  5. Step 5: Solve for x
    x = 150,546,163.30/19,253.88
  6. Step 6: Final answer
    x = 7,819.00

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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.