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Finding the Fourth Proportional to 19,616.80, 29,425.20 and 16,506.40

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Solution

The fourth proportional to 19,616.80, 29,425.20 and 16,506.40 is: 24,759.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,616.80 : 29,425.20 = 16,506.40 : x
  2. Step 2: Convert to fraction form
    19,616.80/29,425.20 = 16,506.40/x
  3. Step 3: Cross multiply
    19,616.80x = 29,425.20 × 16,506.40
  4. Step 4: Simplify right side
    19,616.80x = 485,704,121.28
  5. Step 5: Solve for x
    x = 485,704,121.28/19,616.80
  6. Step 6: Final answer
    x = 24,759.60

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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.