Home / 13,279.21-18,325.26-7,310.89

Finding the Fourth Proportional to 13,279.21, 18,325.26 and 7,310.89

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Solution

The fourth proportional to 13,279.21, 18,325.26 and 7,310.89 is: 10,089.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.21 : 18,325.26 = 7,310.89 : x
  2. Step 2: Convert to fraction form
    13,279.21/18,325.26 = 7,310.89/x
  3. Step 3: Cross multiply
    13,279.21x = 18,325.26 × 7,310.89
  4. Step 4: Simplify right side
    13,279.21x = 133,973,960.08
  5. Step 5: Solve for x
    x = 133,973,960.08/13,279.21
  6. Step 6: Final answer
    x = 10,089.00

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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.