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Finding the Fourth Proportional to 19,604.80, 29,374.80 and 16,818.40

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Solution

The fourth proportional to 19,604.80, 29,374.80 and 16,818.40 is: 25,199.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,604.80 : 29,374.80 = 16,818.40 : x
  2. Step 2: Convert to fraction form
    19,604.80/29,374.80 = 16,818.40/x
  3. Step 3: Cross multiply
    19,604.80x = 29,374.80 × 16,818.40
  4. Step 4: Simplify right side
    19,604.80x = 494,037,136.32
  5. Step 5: Solve for x
    x = 494,037,136.32/19,604.80
  6. Step 6: Final answer
    x = 25,199.80

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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.