Home / 12,519.06-18,762.18-5,115.07

Finding the Fourth Proportional to 12,519.06, 18,762.18 and 5,115.07

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Solution

The fourth proportional to 12,519.06, 18,762.18 and 5,115.07 is: 7,665.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.06 : 18,762.18 = 5,115.07 : x
  2. Step 2: Convert to fraction form
    12,519.06/18,762.18 = 5,115.07/x
  3. Step 3: Cross multiply
    12,519.06x = 18,762.18 × 5,115.07
  4. Step 4: Simplify right side
    12,519.06x = 95,969,949.86
  5. Step 5: Solve for x
    x = 95,969,949.86/12,519.06
  6. Step 6: Final answer
    x = 7,665.91

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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.