Home / 12,613.14-18,919.74-5,209.50

Finding the Fourth Proportional to 12,613.14, 18,919.74 and 5,209.50

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Solution

The fourth proportional to 12,613.14, 18,919.74 and 5,209.50 is: 7,814.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.14 : 18,919.74 = 5,209.50 : x
  2. Step 2: Convert to fraction form
    12,613.14/18,919.74 = 5,209.50/x
  3. Step 3: Cross multiply
    12,613.14x = 18,919.74 × 5,209.50
  4. Step 4: Simplify right side
    12,613.14x = 98,562,385.53
  5. Step 5: Solve for x
    x = 98,562,385.53/12,613.14
  6. Step 6: Final answer
    x = 7,814.26

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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.