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Finding the Fourth Proportional to 19,418.40, 29,084.40 and 16,826.40

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Solution

The fourth proportional to 19,418.40, 29,084.40 and 16,826.40 is: 25,202.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,418.40 : 29,084.40 = 16,826.40 : x
  2. Step 2: Convert to fraction form
    19,418.40/29,084.40 = 16,826.40/x
  3. Step 3: Cross multiply
    19,418.40x = 29,084.40 × 16,826.40
  4. Step 4: Simplify right side
    19,418.40x = 489,385,748.16
  5. Step 5: Solve for x
    x = 489,385,748.16/19,418.40
  6. Step 6: Final answer
    x = 25,202.17

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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.