Home / 12,613.35-18,922.32-5,213.79

Finding the Fourth Proportional to 12,613.35, 18,922.32 and 5,213.79

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Solution

The fourth proportional to 12,613.35, 18,922.32 and 5,213.79 is: 7,821.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.35 : 18,922.32 = 5,213.79 : x
  2. Step 2: Convert to fraction form
    12,613.35/18,922.32 = 5,213.79/x
  3. Step 3: Cross multiply
    12,613.35x = 18,922.32 × 5,213.79
  4. Step 4: Simplify right side
    12,613.35x = 98,657,002.79
  5. Step 5: Solve for x
    x = 98,657,002.79/12,613.35
  6. Step 6: Final answer
    x = 7,821.63

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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.