Home / 13,279.72-18,325.88-7,311.23

Finding the Fourth Proportional to 13,279.72, 18,325.88 and 7,311.23

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Solution

The fourth proportional to 13,279.72, 18,325.88 and 7,311.23 is: 10,089.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.72 : 18,325.88 = 7,311.23 : x
  2. Step 2: Convert to fraction form
    13,279.72/18,325.88 = 7,311.23/x
  3. Step 3: Cross multiply
    13,279.72x = 18,325.88 × 7,311.23
  4. Step 4: Simplify right side
    13,279.72x = 133,984,723.63
  5. Step 5: Solve for x
    x = 133,984,723.63/13,279.72
  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.