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Finding the Fourth Proportional to 21,841.80, 32,769.80 and 17,935.98

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Solution

The fourth proportional to 21,841.80, 32,769.80 and 17,935.98 is: 26,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,841.80 : 32,769.80 = 17,935.98 : x
  2. Step 2: Convert to fraction form
    21,841.80/32,769.80 = 17,935.98/x
  3. Step 3: Cross multiply
    21,841.80x = 32,769.80 × 17,935.98
  4. Step 4: Simplify right side
    21,841.80x = 587,758,387.72
  5. Step 5: Solve for x
    x = 587,758,387.72/21,841.80
  6. Step 6: Final answer
    x = 26,909.80

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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.