Home / 20,664.32-28,516.56-11,232.32

Finding the Fourth Proportional to 20,664.32, 28,516.56 and 11,232.32

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Solution

The fourth proportional to 20,664.32, 28,516.56 and 11,232.32 is: 15,500.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.32 : 28,516.56 = 11,232.32 : x
  2. Step 2: Convert to fraction form
    20,664.32/28,516.56 = 11,232.32/x
  3. Step 3: Cross multiply
    20,664.32x = 28,516.56 × 11,232.32
  4. Step 4: Simplify right side
    20,664.32x = 320,307,127.22
  5. Step 5: Solve for x
    x = 320,307,127.22/20,664.32
  6. Step 6: Final answer
    x = 15,500.49

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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.