Home / 12,613.86-18,919.35-3,379.14

Finding the Fourth Proportional to 12,613.86, 18,919.35 and 3,379.14

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Solution

The fourth proportional to 12,613.86, 18,919.35 and 3,379.14 is: 5,068.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.86 : 18,919.35 = 3,379.14 : x
  2. Step 2: Convert to fraction form
    12,613.86/18,919.35 = 3,379.14/x
  3. Step 3: Cross multiply
    12,613.86x = 18,919.35 × 3,379.14
  4. Step 4: Simplify right side
    12,613.86x = 63,931,132.36
  5. Step 5: Solve for x
    x = 63,931,132.36/12,613.86
  6. Step 6: Final answer
    x = 5,068.32

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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.