Home / 20,463.72-28,240.74-11,511.60

Finding the Fourth Proportional to 20,463.72, 28,240.74 and 11,511.60

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Solution

The fourth proportional to 20,463.72, 28,240.74 and 11,511.60 is: 15,886.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463.72 : 28,240.74 = 11,511.60 : x
  2. Step 2: Convert to fraction form
    20,463.72/28,240.74 = 11,511.60/x
  3. Step 3: Cross multiply
    20,463.72x = 28,240.74 × 11,511.60
  4. Step 4: Simplify right side
    20,463.72x = 325,096,102.58
  5. Step 5: Solve for x
    x = 325,096,102.58/20,463.72
  6. Step 6: Final answer
    x = 15,886.46

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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.