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Finding the Fourth Proportional to 19,992.80, 29,990.82 and 6,841.64

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Solution

The fourth proportional to 19,992.80, 29,990.82 and 6,841.64 is: 10,263.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.80 : 29,990.82 = 6,841.64 : x
  2. Step 2: Convert to fraction form
    19,992.80/29,990.82 = 6,841.64/x
  3. Step 3: Cross multiply
    19,992.80x = 29,990.82 × 6,841.64
  4. Step 4: Simplify right side
    19,992.80x = 205,186,393.74
  5. Step 5: Solve for x
    x = 205,186,393.74/19,992.80
  6. Step 6: Final answer
    x = 10,263.01

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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.