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Finding the Fourth Proportional to 19,996.32, 29,994.48 and 7,675.68

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Solution

The fourth proportional to 19,996.32, 29,994.48 and 7,675.68 is: 11,513.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,996.32 : 29,994.48 = 7,675.68 : x
  2. Step 2: Convert to fraction form
    19,996.32/29,994.48 = 7,675.68/x
  3. Step 3: Cross multiply
    19,996.32x = 29,994.48 × 7,675.68
  4. Step 4: Simplify right side
    19,996.32x = 230,228,030.25
  5. Step 5: Solve for x
    x = 230,228,030.25/19,996.32
  6. Step 6: Final answer
    x = 11,513.52

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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.