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Finding the Fourth Proportional to 30,045.28, 45,024.86 and 16,869.97

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Solution

The fourth proportional to 30,045.28, 45,024.86 and 16,869.97 is: 25,280.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,045.28 : 45,024.86 = 16,869.97 : x
  2. Step 2: Convert to fraction form
    30,045.28/45,024.86 = 16,869.97/x
  3. Step 3: Cross multiply
    30,045.28x = 45,024.86 × 16,869.97
  4. Step 4: Simplify right side
    30,045.28x = 759,568,135.91
  5. Step 5: Solve for x
    x = 759,568,135.91/30,045.28
  6. Step 6: Final answer
    x = 25,280.78

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1.5x scale

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.