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Finding the Fourth Proportional to 12,259.88, 18,390.08 and 3,025.88

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Solution

The fourth proportional to 12,259.88, 18,390.08 and 3,025.88 is: 4,538.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,259.88 : 18,390.08 = 3,025.88 : x
  2. Step 2: Convert to fraction form
    12,259.88/18,390.08 = 3,025.88/x
  3. Step 3: Cross multiply
    12,259.88x = 18,390.08 × 3,025.88
  4. Step 4: Simplify right side
    12,259.88x = 55,646,090.88
  5. Step 5: Solve for x
    x = 55,646,090.88/12,259.88
  6. Step 6: Final answer
    x = 4,538.88

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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.