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Finding the Fourth Proportional to 28,053.42, 42,072.90 and 8,327.52

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Solution

The fourth proportional to 28,053.42, 42,072.90 and 8,327.52 is: 12,489.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.42 : 42,072.90 = 8,327.52 : x
  2. Step 2: Convert to fraction form
    28,053.42/42,072.90 = 8,327.52/x
  3. Step 3: Cross multiply
    28,053.42x = 42,072.90 × 8,327.52
  4. Step 4: Simplify right side
    28,053.42x = 350,362,916.21
  5. Step 5: Solve for x
    x = 350,362,916.21/28,053.42
  6. Step 6: Final answer
    x = 12,489.13

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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.