Home / 13,279.33-18,325.59-7,311.13

Finding the Fourth Proportional to 13,279.33, 18,325.59 and 7,311.13

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Solution

The fourth proportional to 13,279.33, 18,325.59 and 7,311.13 is: 10,089.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.33 : 18,325.59 = 7,311.13 : x
  2. Step 2: Convert to fraction form
    13,279.33/18,325.59 = 7,311.13/x
  3. Step 3: Cross multiply
    13,279.33x = 18,325.59 × 7,311.13
  4. Step 4: Simplify right side
    13,279.33x = 133,980,679.19
  5. Step 5: Solve for x
    x = 133,980,679.19/13,279.33
  6. Step 6: Final answer
    x = 10,089.42

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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.