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Finding the Fourth Proportional to 14,591.60, 20,090.24 and 13,261.28

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Solution

The fourth proportional to 14,591.60, 20,090.24 and 13,261.28 is: 18,258.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,591.60 : 20,090.24 = 13,261.28 : x
  2. Step 2: Convert to fraction form
    14,591.60/20,090.24 = 13,261.28/x
  3. Step 3: Cross multiply
    14,591.60x = 20,090.24 × 13,261.28
  4. Step 4: Simplify right side
    14,591.60x = 266,422,297.91
  5. Step 5: Solve for x
    x = 266,422,297.91/14,591.60
  6. Step 6: Final answer
    x = 18,258.61

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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.