Home / 12,115.16-18,180.42-6,271.76

Finding the Fourth Proportional to 12,115.16, 18,180.42 and 6,271.76

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Solution

The fourth proportional to 12,115.16, 18,180.42 and 6,271.76 is: 9,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.16 : 18,180.42 = 6,271.76 : x
  2. Step 2: Convert to fraction form
    12,115.16/18,180.42 = 6,271.76/x
  3. Step 3: Cross multiply
    12,115.16x = 18,180.42 × 6,271.76
  4. Step 4: Simplify right side
    12,115.16x = 114,023,230.94
  5. Step 5: Solve for x
    x = 114,023,230.94/12,115.16
  6. Step 6: Final answer
    x = 9,411.62

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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.