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Finding the Fourth Proportional to 19,192.80, 28,832.40 and 18,674.40

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Solution

The fourth proportional to 19,192.80, 28,832.40 and 18,674.40 is: 28,053.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,192.80 : 28,832.40 = 18,674.40 : x
  2. Step 2: Convert to fraction form
    19,192.80/28,832.40 = 18,674.40/x
  3. Step 3: Cross multiply
    19,192.80x = 28,832.40 × 18,674.40
  4. Step 4: Simplify right side
    19,192.80x = 538,427,770.56
  5. Step 5: Solve for x
    x = 538,427,770.56/19,192.80
  6. Step 6: Final answer
    x = 28,053.63

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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.