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Finding the Fourth Proportional to 16,690.60, 25,042.30 and 16,428.20

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Solution

The fourth proportional to 16,690.60, 25,042.30 and 16,428.20 is: 24,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,690.60 : 25,042.30 = 16,428.20 : x
  2. Step 2: Convert to fraction form
    16,690.60/25,042.30 = 16,428.20/x
  3. Step 3: Cross multiply
    16,690.60x = 25,042.30 × 16,428.20
  4. Step 4: Simplify right side
    16,690.60x = 411,399,912.86
  5. Step 5: Solve for x
    x = 411,399,912.86/16,690.60
  6. Step 6: Final answer
    x = 24,648.60

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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.