Home / 13,279.20-18,325.38-7,310.58

Finding the Fourth Proportional to 13,279.20, 18,325.38 and 7,310.58

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Solution

The fourth proportional to 13,279.20, 18,325.38 and 7,310.58 is: 10,088.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.20 : 18,325.38 = 7,310.58 : x
  2. Step 2: Convert to fraction form
    13,279.20/18,325.38 = 7,310.58/x
  3. Step 3: Cross multiply
    13,279.20x = 18,325.38 × 7,310.58
  4. Step 4: Simplify right side
    13,279.20x = 133,969,156.52
  5. Step 5: Solve for x
    x = 133,969,156.52/13,279.20
  6. Step 6: Final answer
    x = 10,088.65

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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.