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Finding the Fourth Proportional to 16,902.80, 25,354.20 and 12,237.20

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Solution

The fourth proportional to 16,902.80, 25,354.20 and 12,237.20 is: 18,355.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,902.80 : 25,354.20 = 12,237.20 : x
  2. Step 2: Convert to fraction form
    16,902.80/25,354.20 = 12,237.20/x
  3. Step 3: Cross multiply
    16,902.80x = 25,354.20 × 12,237.20
  4. Step 4: Simplify right side
    16,902.80x = 310,264,416.24
  5. Step 5: Solve for x
    x = 310,264,416.24/16,902.80
  6. Step 6: Final answer
    x = 18,355.80

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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.