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Finding the Fourth Proportional to 28,328.46, 42,489.73 and 9,608.01

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Solution

The fourth proportional to 28,328.46, 42,489.73 and 9,608.01 is: 14,411.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.46 : 42,489.73 = 9,608.01 : x
  2. Step 2: Convert to fraction form
    28,328.46/42,489.73 = 9,608.01/x
  3. Step 3: Cross multiply
    28,328.46x = 42,489.73 × 9,608.01
  4. Step 4: Simplify right side
    28,328.46x = 408,241,750.74
  5. Step 5: Solve for x
    x = 408,241,750.74/28,328.46
  6. Step 6: Final answer
    x = 14,411.01

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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.