Home / 20,664.28-28,516.88-11,232.84

Finding the Fourth Proportional to 20,664.28, 28,516.88 and 11,232.84

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Solution

The fourth proportional to 20,664.28, 28,516.88 and 11,232.84 is: 15,501.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.28 : 28,516.88 = 11,232.84 : x
  2. Step 2: Convert to fraction form
    20,664.28/28,516.88 = 11,232.84/x
  3. Step 3: Cross multiply
    20,664.28x = 28,516.88 × 11,232.84
  4. Step 4: Simplify right side
    20,664.28x = 320,325,550.34
  5. Step 5: Solve for x
    x = 320,325,550.34/20,664.28
  6. Step 6: Final answer
    x = 15,501.41

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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.