Home / 20,409.09-30,607.83-7,926.45

Finding the Fourth Proportional to 20,409.09, 30,607.83 and 7,926.45

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Solution

The fourth proportional to 20,409.09, 30,607.83 and 7,926.45 is: 11,887.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.09 : 30,607.83 = 7,926.45 : x
  2. Step 2: Convert to fraction form
    20,409.09/30,607.83 = 7,926.45/x
  3. Step 3: Cross multiply
    20,409.09x = 30,607.83 × 7,926.45
  4. Step 4: Simplify right side
    20,409.09x = 242,611,434.10
  5. Step 5: Solve for x
    x = 242,611,434.10/20,409.09
  6. Step 6: Final answer
    x = 11,887.42

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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.