Home / 20,688.50-28,549.17-11,735.84

Finding the Fourth Proportional to 20,688.50, 28,549.17 and 11,735.84

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Solution

The fourth proportional to 20,688.50, 28,549.17 and 11,735.84 is: 16,194.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.50 : 28,549.17 = 11,735.84 : x
  2. Step 2: Convert to fraction form
    20,688.50/28,549.17 = 11,735.84/x
  3. Step 3: Cross multiply
    20,688.50x = 28,549.17 × 11,735.84
  4. Step 4: Simplify right side
    20,688.50x = 335,048,348.51
  5. Step 5: Solve for x
    x = 335,048,348.51/20,688.50
  6. Step 6: Final answer
    x = 16,194.91

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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.