Home / 18,984.24-28,476.32-7,289.28

Finding the Fourth Proportional to 18,984.24, 28,476.32 and 7,289.28

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Solution

The fourth proportional to 18,984.24, 28,476.32 and 7,289.28 is: 10,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984.24 : 28,476.32 = 7,289.28 : x
  2. Step 2: Convert to fraction form
    18,984.24/28,476.32 = 7,289.28/x
  3. Step 3: Cross multiply
    18,984.24x = 28,476.32 × 7,289.28
  4. Step 4: Simplify right side
    18,984.24x = 207,571,869.85
  5. Step 5: Solve for x
    x = 207,571,869.85/18,984.24
  6. Step 6: Final answer
    x = 10,933.90

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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.