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Finding the Fourth Proportional to 19,819.26, 27,350.80 and 11,322.50

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Solution

The fourth proportional to 19,819.26, 27,350.80 and 11,322.50 is: 15,625.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.26 : 27,350.80 = 11,322.50 : x
  2. Step 2: Convert to fraction form
    19,819.26/27,350.80 = 11,322.50/x
  3. Step 3: Cross multiply
    19,819.26x = 27,350.80 × 11,322.50
  4. Step 4: Simplify right side
    19,819.26x = 309,679,433
  5. Step 5: Solve for x
    x = 309,679,433/19,819.26
  6. Step 6: Final answer
    x = 15,625.18

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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.