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Finding the Fourth Proportional to 21,880.98, 30,179.63 and 16,503.63

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Solution

The fourth proportional to 21,880.98, 30,179.63 and 16,503.63 is: 22,762.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.98 : 30,179.63 = 16,503.63 : x
  2. Step 2: Convert to fraction form
    21,880.98/30,179.63 = 16,503.63/x
  3. Step 3: Cross multiply
    21,880.98x = 30,179.63 × 16,503.63
  4. Step 4: Simplify right side
    21,880.98x = 498,073,364.54
  5. Step 5: Solve for x
    x = 498,073,364.54/21,880.98
  6. Step 6: Final answer
    x = 22,762.85

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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.