Home / 28,715.52-39,628.44-16,140

Finding the Fourth Proportional to 28,715.52, 39,628.44 and 16,140

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Solution

The fourth proportional to 28,715.52, 39,628.44 and 16,140 is: 22,273.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.52 : 39,628.44 = 16,140 : x
  2. Step 2: Convert to fraction form
    28,715.52/39,628.44 = 16,140/x
  3. Step 3: Cross multiply
    28,715.52x = 39,628.44 × 16,140
  4. Step 4: Simplify right side
    28,715.52x = 639,603,021.60
  5. Step 5: Solve for x
    x = 639,603,021.60/28,715.52
  6. Step 6: Final answer
    x = 22,273.77

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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.