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Finding the Fourth Proportional to 17,946.80, 26,920.20 and 11,380.40

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Solution

The fourth proportional to 17,946.80, 26,920.20 and 11,380.40 is: 17,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,946.80 : 26,920.20 = 11,380.40 : x
  2. Step 2: Convert to fraction form
    17,946.80/26,920.20 = 11,380.40/x
  3. Step 3: Cross multiply
    17,946.80x = 26,920.20 × 11,380.40
  4. Step 4: Simplify right side
    17,946.80x = 306,362,644.08
  5. Step 5: Solve for x
    x = 306,362,644.08/17,946.80
  6. Step 6: Final answer
    x = 17,070.60

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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.