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Finding the Fourth Proportional to 17,676.80, 26,515.20 and 14,782.40

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Solution

The fourth proportional to 17,676.80, 26,515.20 and 14,782.40 is: 22,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,676.80 : 26,515.20 = 14,782.40 : x
  2. Step 2: Convert to fraction form
    17,676.80/26,515.20 = 14,782.40/x
  3. Step 3: Cross multiply
    17,676.80x = 26,515.20 × 14,782.40
  4. Step 4: Simplify right side
    17,676.80x = 391,958,292.48
  5. Step 5: Solve for x
    x = 391,958,292.48/17,676.80
  6. Step 6: Final answer
    x = 22,173.60

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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.