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Finding the Fourth Proportional to 19,300.80, 28,922.40 and 16,363.20

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Solution

The fourth proportional to 19,300.80, 28,922.40 and 16,363.20 is: 24,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,300.80 : 28,922.40 = 16,363.20 : x
  2. Step 2: Convert to fraction form
    19,300.80/28,922.40 = 16,363.20/x
  3. Step 3: Cross multiply
    19,300.80x = 28,922.40 × 16,363.20
  4. Step 4: Simplify right side
    19,300.80x = 473,263,015.68
  5. Step 5: Solve for x
    x = 473,263,015.68/19,300.80
  6. Step 6: Final answer
    x = 24,520.38

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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.