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Finding the Fourth Proportional to 18,494.64, 27,739.80 and 7,400.88

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Solution

The fourth proportional to 18,494.64, 27,739.80 and 7,400.88 is: 11,100.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,494.64 : 27,739.80 = 7,400.88 : x
  2. Step 2: Convert to fraction form
    18,494.64/27,739.80 = 7,400.88/x
  3. Step 3: Cross multiply
    18,494.64x = 27,739.80 × 7,400.88
  4. Step 4: Simplify right side
    18,494.64x = 205,298,931.02
  5. Step 5: Solve for x
    x = 205,298,931.02/18,494.64
  6. Step 6: Final answer
    x = 11,100.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.