Home / 20,571.49-28,388.50-11,618.83

Finding the Fourth Proportional to 20,571.49, 28,388.50 and 11,618.83

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Solution

The fourth proportional to 20,571.49, 28,388.50 and 11,618.83 is: 16,033.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.49 : 28,388.50 = 11,618.83 : x
  2. Step 2: Convert to fraction form
    20,571.49/28,388.50 = 11,618.83/x
  3. Step 3: Cross multiply
    20,571.49x = 28,388.50 × 11,618.83
  4. Step 4: Simplify right side
    20,571.49x = 329,841,155.46
  5. Step 5: Solve for x
    x = 329,841,155.46/20,571.49
  6. Step 6: Final answer
    x = 16,033.90

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1.5x scale

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.