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Finding the Fourth Proportional to 30,898.53, 42,640.02 and 16,751.41

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Solution

The fourth proportional to 30,898.53, 42,640.02 and 16,751.41 is: 23,116.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,898.53 : 42,640.02 = 16,751.41 : x
  2. Step 2: Convert to fraction form
    30,898.53/42,640.02 = 16,751.41/x
  3. Step 3: Cross multiply
    30,898.53x = 42,640.02 × 16,751.41
  4. Step 4: Simplify right side
    30,898.53x = 714,280,350.83
  5. Step 5: Solve for x
    x = 714,280,350.83/30,898.53
  6. Step 6: Final answer
    x = 23,116.97

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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.