Home / 12,530.08-18,778.71-5,125.87

Finding the Fourth Proportional to 12,530.08, 18,778.71 and 5,125.87

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Solution

The fourth proportional to 12,530.08, 18,778.71 and 5,125.87 is: 7,682.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,530.08 : 18,778.71 = 5,125.87 : x
  2. Step 2: Convert to fraction form
    12,530.08/18,778.71 = 5,125.87/x
  3. Step 3: Cross multiply
    12,530.08x = 18,778.71 × 5,125.87
  4. Step 4: Simplify right side
    12,530.08x = 96,257,179.28
  5. Step 5: Solve for x
    x = 96,257,179.28/12,530.08
  6. Step 6: Final answer
    x = 7,682.09

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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.