Home / 13,279.68-18,326.28-7,311.54

Finding the Fourth Proportional to 13,279.68, 18,326.28 and 7,311.54

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Solution

The fourth proportional to 13,279.68, 18,326.28 and 7,311.54 is: 10,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.68 : 18,326.28 = 7,311.54 : x
  2. Step 2: Convert to fraction form
    13,279.68/18,326.28 = 7,311.54/x
  3. Step 3: Cross multiply
    13,279.68x = 18,326.28 × 7,311.54
  4. Step 4: Simplify right side
    13,279.68x = 133,993,329.27
  5. Step 5: Solve for x
    x = 133,993,329.27/13,279.68
  6. Step 6: Final answer
    x = 10,090.10

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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.