Home / 13,279.11-18,325.03-7,310.66

Finding the Fourth Proportional to 13,279.11, 18,325.03 and 7,310.66

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Solution

The fourth proportional to 13,279.11, 18,325.03 and 7,310.66 is: 10,088.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.11 : 18,325.03 = 7,310.66 : x
  2. Step 2: Convert to fraction form
    13,279.11/18,325.03 = 7,310.66/x
  3. Step 3: Cross multiply
    13,279.11x = 18,325.03 × 7,310.66
  4. Step 4: Simplify right side
    13,279.11x = 133,968,063.82
  5. Step 5: Solve for x
    x = 133,968,063.82/13,279.11
  6. Step 6: Final answer
    x = 10,088.63

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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.