Home / 12,515.04-18,769.32-5,118.12

Finding the Fourth Proportional to 12,515.04, 18,769.32 and 5,118.12

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Solution

The fourth proportional to 12,515.04, 18,769.32 and 5,118.12 is: 7,675.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.04 : 18,769.32 = 5,118.12 : x
  2. Step 2: Convert to fraction form
    12,515.04/18,769.32 = 5,118.12/x
  3. Step 3: Cross multiply
    12,515.04x = 18,769.32 × 5,118.12
  4. Step 4: Simplify right side
    12,515.04x = 96,063,632.08
  5. Step 5: Solve for x
    x = 96,063,632.08/12,515.04
  6. Step 6: Final answer
    x = 7,675.85

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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.