Home / 13,279.89-18,324.14-7,613.63

Finding the Fourth Proportional to 13,279.89, 18,324.14 and 7,613.63

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Solution

The fourth proportional to 13,279.89, 18,324.14 and 7,613.63 is: 10,505.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.89 : 18,324.14 = 7,613.63 : x
  2. Step 2: Convert to fraction form
    13,279.89/18,324.14 = 7,613.63/x
  3. Step 3: Cross multiply
    13,279.89x = 18,324.14 × 7,613.63
  4. Step 4: Simplify right side
    13,279.89x = 139,513,161.05
  5. Step 5: Solve for x
    x = 139,513,161.05/13,279.89
  6. Step 6: Final answer
    x = 10,505.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.