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Finding the Fourth Proportional to 28,755, 39,683.52 and 16,180.56

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Solution

The fourth proportional to 28,755, 39,683.52 and 16,180.56 is: 22,330.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,755 : 39,683.52 = 16,180.56 : x
  2. Step 2: Convert to fraction form
    28,755/39,683.52 = 16,180.56/x
  3. Step 3: Cross multiply
    28,755x = 39,683.52 × 16,180.56
  4. Step 4: Simplify right side
    28,755x = 642,101,576.37
  5. Step 5: Solve for x
    x = 642,101,576.37/28,755
  6. Step 6: Final answer
    x = 22,330.08

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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.