Home / 20,362.88-28,100.84-11,870.04

Finding the Fourth Proportional to 20,362.88, 28,100.84 and 11,870.04

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Solution

The fourth proportional to 20,362.88, 28,100.84 and 11,870.04 is: 16,380.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.88 : 28,100.84 = 11,870.04 : x
  2. Step 2: Convert to fraction form
    20,362.88/28,100.84 = 11,870.04/x
  3. Step 3: Cross multiply
    20,362.88x = 28,100.84 × 11,870.04
  4. Step 4: Simplify right side
    20,362.88x = 333,558,094.83
  5. Step 5: Solve for x
    x = 333,558,094.83/20,362.88
  6. Step 6: Final answer
    x = 16,380.69

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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.