Home / 12,576.88-18,867.36-4,257.40

Finding the Fourth Proportional to 12,576.88, 18,867.36 and 4,257.40

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Solution

The fourth proportional to 12,576.88, 18,867.36 and 4,257.40 is: 6,386.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.88 : 18,867.36 = 4,257.40 : x
  2. Step 2: Convert to fraction form
    12,576.88/18,867.36 = 4,257.40/x
  3. Step 3: Cross multiply
    12,576.88x = 18,867.36 × 4,257.40
  4. Step 4: Simplify right side
    12,576.88x = 80,325,898.46
  5. Step 5: Solve for x
    x = 80,325,898.46/12,576.88
  6. Step 6: Final answer
    x = 6,386.79

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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.