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Finding the Fourth Proportional to 16,630.21, 22,949.95 and 9,919.76

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Solution

The fourth proportional to 16,630.21, 22,949.95 and 9,919.76 is: 13,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,630.21 : 22,949.95 = 9,919.76 : x
  2. Step 2: Convert to fraction form
    16,630.21/22,949.95 = 9,919.76/x
  3. Step 3: Cross multiply
    16,630.21x = 22,949.95 × 9,919.76
  4. Step 4: Simplify right side
    16,630.21x = 227,657,996.01
  5. Step 5: Solve for x
    x = 227,657,996.01/16,630.21
  6. Step 6: Final answer
    x = 13,689.43

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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.