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Finding the Fourth Proportional to 28,543.02, 42,814.05 and 8,819.25

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Solution

The fourth proportional to 28,543.02, 42,814.05 and 8,819.25 is: 13,228.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.02 : 42,814.05 = 8,819.25 : x
  2. Step 2: Convert to fraction form
    28,543.02/42,814.05 = 8,819.25/x
  3. Step 3: Cross multiply
    28,543.02x = 42,814.05 × 8,819.25
  4. Step 4: Simplify right side
    28,543.02x = 377,587,810.46
  5. Step 5: Solve for x
    x = 377,587,810.46/28,543.02
  6. Step 6: Final answer
    x = 13,228.73

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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.