Home / 20,701.76-28,566.72-11,748.80

Finding the Fourth Proportional to 20,701.76, 28,566.72 and 11,748.80

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Solution

The fourth proportional to 20,701.76, 28,566.72 and 11,748.80 is: 16,212.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.76 : 28,566.72 = 11,748.80 : x
  2. Step 2: Convert to fraction form
    20,701.76/28,566.72 = 11,748.80/x
  3. Step 3: Cross multiply
    20,701.76x = 28,566.72 × 11,748.80
  4. Step 4: Simplify right side
    20,701.76x = 335,624,679.94
  5. Step 5: Solve for x
    x = 335,624,679.94/20,701.76
  6. Step 6: Final answer
    x = 16,212.37

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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.