Home / 13,279.06-18,325.88-7,311.25

Finding the Fourth Proportional to 13,279.06, 18,325.88 and 7,311.25

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Solution

The fourth proportional to 13,279.06, 18,325.88 and 7,311.25 is: 10,089.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.06 : 18,325.88 = 7,311.25 : x
  2. Step 2: Convert to fraction form
    13,279.06/18,325.88 = 7,311.25/x
  3. Step 3: Cross multiply
    13,279.06x = 18,325.88 × 7,311.25
  4. Step 4: Simplify right side
    13,279.06x = 133,985,090.15
  5. Step 5: Solve for x
    x = 133,985,090.15/13,279.06
  6. Step 6: Final answer
    x = 10,089.95

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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.