Home / 20,994.42-28,972.30-11,562.99

Finding the Fourth Proportional to 20,994.42, 28,972.30 and 11,562.99

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Solution

The fourth proportional to 20,994.42, 28,972.30 and 11,562.99 is: 15,956.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.42 : 28,972.30 = 11,562.99 : x
  2. Step 2: Convert to fraction form
    20,994.42/28,972.30 = 11,562.99/x
  3. Step 3: Cross multiply
    20,994.42x = 28,972.30 × 11,562.99
  4. Step 4: Simplify right side
    20,994.42x = 335,006,415.18
  5. Step 5: Solve for x
    x = 335,006,415.18/20,994.42
  6. Step 6: Final answer
    x = 15,956.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.