Home / 20,928.06-28,881.27-11,496.87

Finding the Fourth Proportional to 20,928.06, 28,881.27 and 11,496.87

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Solution

The fourth proportional to 20,928.06, 28,881.27 and 11,496.87 is: 15,865.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.06 : 28,881.27 = 11,496.87 : x
  2. Step 2: Convert to fraction form
    20,928.06/28,881.27 = 11,496.87/x
  3. Step 3: Cross multiply
    20,928.06x = 28,881.27 × 11,496.87
  4. Step 4: Simplify right side
    20,928.06x = 332,044,206.62
  5. Step 5: Solve for x
    x = 332,044,206.62/20,928.06
  6. Step 6: Final answer
    x = 15,865.98

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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.