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Finding the Fourth Proportional to 19,016.80, 28,500.90 and 16,829.80

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Solution

The fourth proportional to 19,016.80, 28,500.90 and 16,829.80 is: 25,223.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,016.80 : 28,500.90 = 16,829.80 : x
  2. Step 2: Convert to fraction form
    19,016.80/28,500.90 = 16,829.80/x
  3. Step 3: Cross multiply
    19,016.80x = 28,500.90 × 16,829.80
  4. Step 4: Simplify right side
    19,016.80x = 479,664,446.82
  5. Step 5: Solve for x
    x = 479,664,446.82/19,016.80
  6. Step 6: Final answer
    x = 25,223.19

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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.