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Finding the Fourth Proportional to 28,605.96, 42,819.03 and 19,814.22

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Solution

The fourth proportional to 28,605.96, 42,819.03 and 19,814.22 is: 29,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.96 : 42,819.03 = 19,814.22 : x
  2. Step 2: Convert to fraction form
    28,605.96/42,819.03 = 19,814.22/x
  3. Step 3: Cross multiply
    28,605.96x = 42,819.03 × 19,814.22
  4. Step 4: Simplify right side
    28,605.96x = 848,425,680.61
  5. Step 5: Solve for x
    x = 848,425,680.61/28,605.96
  6. Step 6: Final answer
    x = 29,659.05

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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.