Home / 12,591.76-18,887.08-4,271.44

Finding the Fourth Proportional to 12,591.76, 18,887.08 and 4,271.44

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Solution

The fourth proportional to 12,591.76, 18,887.08 and 4,271.44 is: 6,406.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.76 : 18,887.08 = 4,271.44 : x
  2. Step 2: Convert to fraction form
    12,591.76/18,887.08 = 4,271.44/x
  3. Step 3: Cross multiply
    12,591.76x = 18,887.08 × 4,271.44
  4. Step 4: Simplify right side
    12,591.76x = 80,675,029.00
  5. Step 5: Solve for x
    x = 80,675,029.00/12,591.76
  6. Step 6: Final answer
    x = 6,406.97

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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.