Home / 12,439.88-18,659.18-4,648.08

Finding the Fourth Proportional to 12,439.88, 18,659.18 and 4,648.08

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Solution

The fourth proportional to 12,439.88, 18,659.18 and 4,648.08 is: 6,971.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.88 : 18,659.18 = 4,648.08 : x
  2. Step 2: Convert to fraction form
    12,439.88/18,659.18 = 4,648.08/x
  3. Step 3: Cross multiply
    12,439.88x = 18,659.18 × 4,648.08
  4. Step 4: Simplify right side
    12,439.88x = 86,729,361.37
  5. Step 5: Solve for x
    x = 86,729,361.37/12,439.88
  6. Step 6: Final answer
    x = 6,971.88

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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.