Home / 20,468.44-28,248.72-11,518.12

Finding the Fourth Proportional to 20,468.44, 28,248.72 and 11,518.12

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Solution

The fourth proportional to 20,468.44, 28,248.72 and 11,518.12 is: 15,896.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.44 : 28,248.72 = 11,518.12 : x
  2. Step 2: Convert to fraction form
    20,468.44/28,248.72 = 11,518.12/x
  3. Step 3: Cross multiply
    20,468.44x = 28,248.72 × 11,518.12
  4. Step 4: Simplify right side
    20,468.44x = 325,372,146.81
  5. Step 5: Solve for x
    x = 325,372,146.81/20,468.44
  6. Step 6: Final answer
    x = 15,896.28

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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.