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Finding the Fourth Proportional to 17,680.40, 26,477.40 and 16,902.80

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Solution

The fourth proportional to 17,680.40, 26,477.40 and 16,902.80 is: 25,312.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,680.40 : 26,477.40 = 16,902.80 : x
  2. Step 2: Convert to fraction form
    17,680.40/26,477.40 = 16,902.80/x
  3. Step 3: Cross multiply
    17,680.40x = 26,477.40 × 16,902.80
  4. Step 4: Simplify right side
    17,680.40x = 447,542,196.72
  5. Step 5: Solve for x
    x = 447,542,196.72/17,680.40
  6. Step 6: Final answer
    x = 25,312.90

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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.